86991934 has 12 divisors (see below), whose sum is σ = 136409616. Its totient is φ = 41604332.

The previous prime is 86991913. The next prime is 86991977. The reversal of 86991934 is 43919968.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40054 + ... + 42169.

It is an arithmetic number, because the mean of its divisors is an integer number (11367468).

Almost surely, 2^86991934 is an apocalyptic number.

86991934 is a deficient number, since it is larger than the sum of its proper divisors (49417682).

86991934 is a wasteful number, since it uses less digits than its factorization.

86991934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82271 (or 82248 counting only the distinct ones).

The product of its digits is 419904, while the sum is 49.

The square root of 86991934 is about 9326.9466600812. The cubic root of 86991934 is about 443.0910679415.

The spelling of 86991934 in words is "eighty-six million, nine hundred ninety-one thousand, nine hundred thirty-four".