44991172 has 12 divisors (see below), whose sum is σ = 79079980. Its totient is φ = 22396896.

The previous prime is 44991169. The next prime is 44991187. The reversal of 44991172 is 27119944.

It can be written as a sum of positive squares in 2 ways, for example, as 41396356 + 3594816 = 6434^2 + 1896^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23643 + ... + 25474.

Almost surely, 2^44991172 is an apocalyptic number.

It is an amenable number.

44991172 is a deficient number, since it is larger than the sum of its proper divisors (34088808).

44991172 is a wasteful number, since it uses less digits than its factorization.

44991172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49350 (or 49348 counting only the distinct ones).

The product of its digits is 18144, while the sum is 37.

The square root of 44991172 is about 6707.5458999548. The cubic root of 44991172 is about 355.6660694804. Note that the first 3 decimals are identical.

It can be divided in two parts, 4499 and 1172, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 44991172 in words is "forty-four million, nine hundred ninety-one thousand, one hundred seventy-two".