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'''49''' ('''forty-nine''') is the ] following ] and preceding ]. '''49''' ('''forty-nine''') is the ] following ] and preceding ].


the legend himself wears 49 in baseball
==In mathematics==
* '''Forty-nine''' is the square of ]

The ] of '''forty-nine''' is ], and this number has an ] of (8, 7, 1, 0).

49 is the 8th ] in the 7-aliquot tree.

The sum of the digits of the square of 49 (2401) is the square root of 49.

49 is the first square where the digits are squares. In this case 4 and 9 are squares.

It appears in the ], preceded by the terms 21, 28, 37 (it is the sum of the first two of these).<ref>{{Cite web|url=https://oeis.org/A000931|title=Sloane's A000931 : Padovan sequence|last=|first=|date=|website=The On-Line Encyclopedia of Integer Sequences|publisher=OEIS Foundation|access-date=2016-05-30}}</ref>

Along with the number that immediately derives from it, 77, the only number under 3 digits not having its ] known (as of late 2010).

===Reciprocal===
{{See also| Repeating decimal}}

The fraction {{frac|1|49}} is a repeating decimal with a period of 42:

: {{frac|1|49}} = 0.0204081632 6530612244 8979591836 7346938775 51 (42 repeating digits)

There are 42 (note that this number is the period) positive integers that are less than 49 and coprime to 49. Multiplying 020408163265306122448979591836734693877551 by each of these integers results in a ] of the original number:

*020408163265306122448979591836734693877551 &times; 2 = 040816326530612244897959183673469387755102
*020408163265306122448979591836734693877551 &times; 3 = 061224489795918367346938775510204081632653
*020408163265306122448979591836734693877551 &times; 4 = 081632653061224489795918367346938775510204
*...

The repeating number can be obtained from 02 and repetition of doubles placed at two places to the right:

02
04
08
16
32
64
128
256
512
1024
2048
+ ...
----------------------
020408163265306122448979591836734693877551...0204081632...


==In chemistry== ==In chemistry==

Revision as of 03:19, 8 September 2016

This article is about the number. For the steamboat, see Forty-Nine (steamboat).
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Find sources: "49" number – news · newspapers · books · scholar · JSTOR (May 2016) (Learn how and when to remove this message)
Natural number
← 48 49 50 →
40 41 42 43 44 45 46 47 48 49 0 10 20 30 40 50 60 70 80 90
Cardinalforty-nine
Ordinal49th
(forty-ninth)
Factorization7
Divisors1, 7, 49
Greek numeralΜΘ´
Roman numeralXLIX, xlix
Binary1100012
Ternary12113
Senary1216
Octal618
Duodecimal4112
Hexadecimal3116

49 (forty-nine) is the natural number following 48 and preceding 50.

the legend himself wears 49 in baseball

In chemistry

  • The atomic number of indium.
  • During the Manhattan Project, plutonium was also often referred to, simply, as "49". Number 4 was for the last digit in 94 (atomic number of plutonium) and 9 for the last digit in Pu-239, the weapon-grade fissile isotope used in nuclear bombs.

In astronomy

In religion

In sports

See also 49er.

In music

See also: 49er
  • Featured in the song title "49 Bye-Byes" in Crosby Stills and Nash's self-titled album
  • "Days of 49", a Bob Dylan song
  • 49:00... Of Your Time/Life is a one-track solo album by Paul Westerberg.
  • In Blues music lore, it was at the junction of US Highway 49 and 61 in Clarksdale, Mississippi, that legendary bluesman Robert Johnson sold his soul to the devil in return for fame and success. In later years Howlin’ Wolf immortalized the road in the song “Highway 49,” originally written by Big Joe Williams: “Long tall momma / She don’t pay me no mind / All she wanna do / Walk the Highway 49.”
  • ALSO: US Highway 49 continues from that infamous junction in Mississippi and through Helena-West Helena, Arkansas, home of legendary bluesmen Sonny Boy Williamson and renowned harmonica player Frank Frost who both began their careers on the King Biscuit Time radio show, the longest-running Blues radio show hosted by "Sunshine" Sonny Payne who, as of this entry (June 1, 2016) still hosts the daily radio show on KFFA-AM 1360 from the current studio in the Delta Cultural Center at the end of Cherry Street in downtown Helena, Arkansas. The radio show went on to inspire, arguably, one of the finest blues festivals, known world-wide by fans of early blues music as the annual King Biscuit Blues Festival on the river levee which holds the muddy waters of the mighty Mississippi River at bay a little over a hundred yards from the main stage of the festival, providing a down-home atmosphere that is second-to-none in the blues festivals held around the United States.

In other fields

Forty-nine is:

References

  1. Hammel, E.F. (2000). "The taming of "49" — Big Science in little time. Recollections of Edward F. Hammel, pp. 2-9. In: Cooper N.G. Ed. (2000). Challenges in Plutonium Science" (PDF). Los Alamos Science. 26 (1): 2–9.
  2. Hecker, S.S. (2000). "Plutonium: an historical overview. In: Challenges in Plutonium Science". Los Alamos Science. 26 (1): 1–2.
  3. Audio commentary by Sherman Aexie and Sean Axmaker on the DVD of The Exiles
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