86936931 has 12 divisors (see below), whose sum is σ = 126209200. Its totient is φ = 57665520.

The previous prime is 86936917. The next prime is 86936957. The reversal of 86936931 is 13963968.

It is not a de Polignac number, because 86936931 - 2¹³ = 86928739 is a prime.

It is a super-2 number, since 2×86936931² = 15116059943397522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86936911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22480 + ... + 26061.

Almost surely, 2^86936931 is an apocalyptic number.

86936931 is a deficient number, since it is larger than the sum of its proper divisors (39272269).

86936931 is a wasteful number, since it uses less digits than its factorization.

86936931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48746 (or 48743 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 86936931 is about 9323.9975868723. The cubic root of 86936931 is about 442.9976628208.

Adding to 86936931 its sum of digits (45), we get a square (86936976 = 9324²).

The spelling of 86936931 in words is "eighty-six million, nine hundred thirty-six thousand, nine hundred thirty-one".