86955931 has 4 divisors (see below), whose sum is σ = 87045912. Its totient is φ = 86865952.

The previous prime is 86955929. The next prime is 86955959. The reversal of 86955931 is 13955968.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86955931 - 2¹ = 86955929 is a prime.

It is a super-2 number, since 2×86955931² = 15122667872153522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86955971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43525 + ... + 45478.

It is an arithmetic number, because the mean of its divisors is an integer number (21761478).

Almost surely, 2^86955931 is an apocalyptic number.

86955931 is a deficient number, since it is larger than the sum of its proper divisors (89981).

86955931 is an equidigital number, since it uses as much as digits as its factorization.

86955931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89980.

The product of its digits is 291600, while the sum is 46.

The square root of 86955931 is about 9325.0164074923. The cubic root of 86955931 is about 443.0299327372.

The spelling of 86955931 in words is "eighty-six million, nine hundred fifty-five thousand, nine hundred thirty-one".