44 (number)


44 is the natural number following 43 and preceding 45.

In mathematics

Forty-four is a tribonacci number, an octahedral number and the number of derangements of 5 items.
Since the greatest prime factor of 442 + 1 = 1937 is 149 and thus more than 44 twice, 44 is a Størmer number.
Given Euler's totient function, φ = 20 and φ = 44.
44 is a repdigit
In decimal notation, 44 is a palindromic number and a happy number.

In science

Forty-four is:
AD 44, 44 BC, 1944, 2044, etc.