86881904 has 20 divisors (see below), whose sum is σ = 168713160. Its totient is φ = 43343040.

The previous prime is 86881903. The next prime is 86881931. The reversal of 86881904 is 40918868.

It is a happy number.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86881903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1487 + ... + 13265.

It is an arithmetic number, because the mean of its divisors is an integer number (8435658).

Almost surely, 2^86881904 is an apocalyptic number.

It is an amenable number.

86881904 is a deficient number, since it is larger than the sum of its proper divisors (81831256).

86881904 is a wasteful number, since it uses less digits than its factorization.

86881904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12248 (or 12242 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 86881904 is about 9321.0462932012. The cubic root of 86881904 is about 442.9041775127.

The spelling of 86881904 in words is "eighty-six million, eight hundred eighty-one thousand, nine hundred four".