86972392 has 32 divisors (see below), whose sum is σ = 181679400. Its totient is φ = 38755584.

The previous prime is 86972387. The next prime is 86972401. The reversal of 86972392 is 29327968.

It can be written as a sum of positive squares in 4 ways, for example, as 66487716 + 20484676 = 8154^2 + 4526^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11403 + ... + 17434.

Almost surely, 2^86972392 is an apocalyptic number.

It is an amenable number.

86972392 is an abundant number, since it is smaller than the sum of its proper divisors (94707008).

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

86972392 is a wasteful number, since it uses less digits than its factorization.

86972392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28885 (or 28881 counting only the distinct ones).

The product of its digits is 326592, while the sum is 46.

The square root of 86972392 is about 9325.8989915182. The cubic root of 86972392 is about 443.0578865736.

The spelling of 86972392 in words is "eighty-six million, nine hundred seventy-two thousand, three hundred ninety-two".