86999992 has 32 divisors (see below), whose sum is σ = 167378400. Its totient is φ = 42380800.

The previous prime is 86999989. The next prime is 87000037. The reversal of 86999992 is 29999968.

It is a self number, because there is not a number n which added to its sum of digits gives 86999992.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49692 + ... + 51412.

It is an arithmetic number, because the mean of its divisors is an integer number (5230575).

Almost surely, 2^86999992 is an apocalyptic number.

It is an amenable number.

86999992 is a deficient number, since it is larger than the sum of its proper divisors (80378408).

86999992 is a wasteful number, since it uses less digits than its factorization.

86999992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1887 (or 1883 counting only the distinct ones).

The product of its digits is 5668704, while the sum is 61.

The square root of 86999992 is about 9327.3786242438. The cubic root of 86999992 is about 443.1047485876.

The spelling of 86999992 in words is "eighty-six million, nine hundred ninety-nine thousand, nine hundred ninety-two".