49 (number)

49 is the natural number following 48 and preceding 50.

List of numbersIntegers

<< 40 41 42 43 44 45 46 47 48 49 >>

Cardinal forty-nine
Ordinal49th (forty-ninth)
Factorization<math>7^2 \,\!<math>
Roman numeralXLIX
Binary0110001
Hexadecimal31

In mathematics

Forty-nine is a square number, a centered octagonal number, and a Somer pseudoprime based on 8.

In science

In astronomy,

Messier object M49, a magnitude 10.0 galaxy in the constellation Virgo.
The New General Catalogue object (http://www.ngcic.org/) NGC 49, a spiral galaxy in the constellation Cetus.
The Saros number (http://sunearth.gsfc.nasa.gov/eclipse/SEsaros/SEsaros1-175.html) of the solar eclipse series which began on -1248 February 22 and ended on 32 March 29. The duration of Saros series 49 was 1280.1 years, and it contained 72 solar eclipses.
The Saros number (http://sunearth.gsfc.nasa.gov/eclipse/LEsaros/LEsaros1-175.html) of the lunar eclipse series which began on -1217 June 21 and ended on 81 August 8. The duration of Saros series 49 was 1298.1 years, and it contained 73 lunar eclipses.

In other fields

Forty-nine is also:

eo:Kvardek naŭ fr:49 (nombre) ko:49 ia:49 it:Quarantanove nl:49 (getal) ja:49 pt:Quarenta e nove sl:49 (število) sv:49 (tal) zh:49

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