49 (number)

49 is the natural number following 48 and preceding 50.

List of numbers — Integers << 40 41 42 43 44 45 46 47 48 49 >>
Cardinal	forty-nine
Ordinal	49th (forty-ninth)
Factorization	<math>7^2 \,\!<math>
Roman numeral	XLIX
Binary	0110001
Hexadecimal	31

Forty-nine is a square number, and a atomic number of indium.

• 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 gold rush.
• The year AD 49, 49 BC, and 1949.