91883960 has 64 divisors (see below), whose sum is σ = 237470400. Its totient is φ = 31343616.

The previous prime is 91883951. The next prime is 91883971. The reversal of 91883960 is 6938819.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63404 + ... + 64836.

It is an arithmetic number, because the mean of its divisors is an integer number (3710475).

Almost surely, 2^91883960 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91883960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118735200).

91883960 is an abundant number, since it is smaller than the sum of its proper divisors (145586440).

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

91883960 is a wasteful number, since it uses less digits than its factorization.

91883960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680 (or 1676 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 91883960 is about 9585.6121348613. The cubic root of 91883960 is about 451.2458644045.

The spelling of 91883960 in words is "ninety-one million, eight hundred eighty-three thousand, nine hundred sixty".