91339688 has 32 divisors (see below), whose sum is σ = 196668000. Its totient is φ = 39332160.

The previous prime is 91339687. The next prime is 91339747. The reversal of 91339688 is 88693319.

It is not an unprimeable number, because it can be changed into a prime (91339687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25643 + ... + 28986.

It is an arithmetic number, because the mean of its divisors is an integer number (6145875).

Almost surely, 2^91339688 is an apocalyptic number.

It is an amenable number.

91339688 is an abundant number, since it is smaller than the sum of its proper divisors (105328312).

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

91339688 is a wasteful number, since it uses less digits than its factorization.

91339688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54665 (or 54661 counting only the distinct ones).

The product of its digits is 279936, while the sum is 47.

The square root of 91339688 is about 9557.1799187836. The cubic root of 91339688 is about 450.3531187171.

The spelling of 91339688 in words is "ninety-one million, three hundred thirty-nine thousand, six hundred eighty-eight".