91857396 has 24 divisors (see below), whose sum is σ = 215276320. Its totient is φ = 30484512.

The previous prime is 91857349. The next prime is 91857397. The reversal of 91857396 is 69375819.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91857397) 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, 13966 + ... + 19461.

Almost surely, 2^91857396 is an apocalyptic number.

It is an amenable number.

91857396 is an abundant number, since it is smaller than the sum of its proper divisors (123418924).

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

91857396 is a wasteful number, since it uses less digits than its factorization.

91857396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33663 (or 33661 counting only the distinct ones).

The product of its digits is 408240, while the sum is 48.

The square root of 91857396 is about 9584.2264163572. The cubic root of 91857396 is about 451.2023745851.

The spelling of 91857396 in words is "ninety-one million, eight hundred fifty-seven thousand, three hundred ninety-six".