86940990 has 24 divisors (see below), whose sum is σ = 226046808. Its totient is φ = 23184240.

The previous prime is 86940967. The next prime is 86941007. The reversal of 86940990 is 9904968.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 482916 + ... + 483095.

It is an arithmetic number, because the mean of its divisors is an integer number (9418617).

Almost surely, 2^86940990 is an apocalyptic number.

86940990 is an abundant number, since it is smaller than the sum of its proper divisors (139105818).

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

86940990 is a wasteful number, since it uses less digits than its factorization.

86940990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966024 (or 966021 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 86940990 is about 9324.2152484807. The cubic root of 86940990 is about 443.0045570889.

The spelling of 86940990 in words is "eighty-six million, nine hundred forty thousand, nine hundred ninety".