86842931 has 8 divisors (see below), whose sum is σ = 100232544. Its totient is φ = 73699200.

The previous prime is 86842927. The next prime is 86842933. The reversal of 86842931 is 13924868.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86842931 - 2² = 86842927 is a prime.

It is a super-2 number, since 2×86842931² = 15083389329341522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86842933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60710 + ... + 62123.

It is an arithmetic number, because the mean of its divisors is an integer number (12529068).

Almost surely, 2^86842931 is an apocalyptic number.

86842931 is a deficient number, since it is larger than the sum of its proper divisors (13389613).

86842931 is a wasteful number, since it uses less digits than its factorization.

86842931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122941.

The product of its digits is 82944, while the sum is 41.

The square root of 86842931 is about 9318.9554672184. The cubic root of 86842931 is about 442.8379424459.

The spelling of 86842931 in words is "eighty-six million, eight hundred forty-two thousand, nine hundred thirty-one".