90831109924 has 27 divisors (see below), whose sum is σ = 164281206033. Its totient is φ = 43941495600.

The previous prime is 90831109903. The next prime is 90831109933. The reversal of 90831109924 is 42990113809.

It is a happy number.

The square root of 90831109924 is 301382.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 83510596324 + 7320513600 = 288982^2 + 85560^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 18683254 + ... + 18688114.

Almost surely, 2^90831109924 is an apocalyptic number.

90831109924 is the 301382-nd square number.

It is an amenable number.

90831109924 is a deficient number, since it is larger than the sum of its proper divisors (73450096109).

90831109924 is an frugal number, since it uses more digits than its factorization.

90831109924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9788 (or 4894 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 46.

The spelling of 90831109924 in words is "ninety billion, eight hundred thirty-one million, one hundred nine thousand, nine hundred twenty-four".