44189931 has 4 divisors (see below), whose sum is σ = 58919912. Its totient is φ = 29459952.

The previous prime is 44189927. The next prime is 44189989. The reversal of 44189931 is 13998144.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 44189931 - 2² = 44189927 is a prime.

It is a super-2 number, since 2×44189931² = 3905500003569522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44189931.

It is not an unprimeable number, because it can be changed into a prime (44181931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7364986 + ... + 7364991.

It is an arithmetic number, because the mean of its divisors is an integer number (14729978).

Almost surely, 2^44189931 is an apocalyptic number.

44189931 is a deficient number, since it is larger than the sum of its proper divisors (14729981).

44189931 is a wasteful number, since it uses less digits than its factorization.

44189931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14729980.

The product of its digits is 31104, while the sum is 39.

The square root of 44189931 is about 6647.5507519687. The cubic root of 44189931 is about 353.5420760334.

The spelling of 44189931 in words is "forty-four million, one hundred eighty-nine thousand, nine hundred thirty-one".