49 (number)
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49 is the natural number following 48 and preceding 50.
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| Cardinal | forty-nine | ||
| Ordinal | 49th (forty-ninth) | ||
| Factorization | <math>7^2 \,\!<math> | ||
| Roman numeral | XLIX | ||
| Binary | 0110001 | ||
| Hexadecimal | 31 | ||
In mathematics
Forty-nine is a square number, a centered octagonal number, and a Somer pseudoprime based on 8.
In science
- The atomic number of indium
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:
- The span between Jubilee years as ordained in the Holy Bible.
- The number of strings on a harp and the number of keys on a celesta.
- I-49 is the designation for a US interstate highway in Louisiana.
- The code for international direct dial phone calls to Germany.
- As in 49er, the moniker of those who participated in the 1849 California Gold Rush.
- In the title of Thomas Pynchon's novel The Crying of Lot 49.
- In the title of the movie Ladder 49.
- The year AD 49, 49 BC, and 1949.
- The car number of the BAM Racing Schwan's Home Service Dodge Charger, currently driven by NASCAR veteran Ken Schrader.es:Cuarenta y nueve
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