90392812 has 12 divisors (see below), whose sum is σ = 159326440. Its totient is φ = 44870976.

The previous prime is 90392777. The next prime is 90392833. The reversal of 90392812 is 21829309.

It is a super-2 number, since 2×90392812² = 16341720922534688, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80733 + ... + 81844.

Almost surely, 2^90392812 is an apocalyptic number.

It is an amenable number.

90392812 is a deficient number, since it is larger than the sum of its proper divisors (68933628).

90392812 is a wasteful number, since it uses less digits than its factorization.

90392812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162720 (or 162718 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 90392812 is about 9507.5134498985. The cubic root of 90392812 is about 448.7915097270.

It can be divided in two parts, 90392 and 812, that added together give a square (91204 = 302²).

The spelling of 90392812 in words is "ninety million, three hundred ninety-two thousand, eight hundred twelve".