86117904 has 50 divisors (see below), whose sum is σ = 249253950. Its totient is φ = 28705536.

The previous prime is 86117893. The next prime is 86117947. The reversal of 86117904 is 40971168.

It can be written as a sum of positive squares in only one way, i.e., 85599504 + 518400 = 9252^2 + 720^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 31929 + ... + 34520.

It is an arithmetic number, because the mean of its divisors is an integer number (4985079).

Almost surely, 2^86117904 is an apocalyptic number.

It is an amenable number.

86117904 is an abundant number, since it is smaller than the sum of its proper divisors (163136046).

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

86117904 is a wasteful number, since it uses less digits than its factorization.

86117904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66469 (or 66454 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 86117904 is about 9279.9732758236. The cubic root of 86117904 is about 441.6021207365.

The spelling of 86117904 in words is "eighty-six million, one hundred seventeen thousand, nine hundred four".