86117988 has 48 divisors (see below), whose sum is σ = 232110144. Its totient is φ = 24560640.

The previous prime is 86117947. The next prime is 86118001. The reversal of 86117988 is 88971168.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16945 + ... + 21432.

It is an arithmetic number, because the mean of its divisors is an integer number (4835628).

Almost surely, 2^86117988 is an apocalyptic number.

It is an amenable number.

86117988 is an abundant number, since it is smaller than the sum of its proper divisors (145992156).

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

86117988 is a wasteful number, since it uses less digits than its factorization.

86117988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38412 (or 38410 counting only the distinct ones).

The product of its digits is 193536, while the sum is 48.

The square root of 86117988 is about 9279.9778016976. The cubic root of 86117988 is about 441.6022643170.

The spelling of 86117988 in words is "eighty-six million, one hundred seventeen thousand, nine hundred eighty-eight".