44157990 has 32 divisors (see below), whose sum is σ = 108446976. Its totient is φ = 11501280.

The previous prime is 44157979. The next prime is 44158001. The reversal of 44157990 is 9975144.

It is an interprime number because it is at equal distance from previous prime (44157979) and next prime (44158001).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 15826 + ... + 18405.

It is an arithmetic number, because the mean of its divisors is an integer number (3388968).

Almost surely, 2^44157990 is an apocalyptic number.

44157990 is an abundant number, since it is smaller than the sum of its proper divisors (64288986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

44157990 is a wasteful number, since it uses less digits than its factorization.

44157990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34284.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 44157990 is about 6645.1478538856. The cubic root of 44157990 is about 353.4568740499.

The spelling of 44157990 in words is "forty-four million, one hundred fifty-seven thousand, nine hundred ninety".