86931418 has 16 divisors (see below), whose sum is σ = 149160960. Its totient is φ = 37222416.

The previous prime is 86931391. The next prime is 86931431. The reversal of 86931418 is 81413968.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 18823 + ... + 22981.

It is an arithmetic number, because the mean of its divisors is an integer number (9322560).

Almost surely, 2^86931418 is an apocalyptic number.

86931418 is a deficient number, since it is larger than the sum of its proper divisors (62229542).

86931418 is a wasteful number, since it uses less digits than its factorization.

86931418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5661.

The product of its digits is 41472, while the sum is 40.

The square root of 86931418 is about 9323.7019471881. The cubic root of 86931418 is about 442.9882985697.

The spelling of 86931418 in words is "eighty-six million, nine hundred thirty-one thousand, four hundred eighteen".