91775892 has 48 divisors (see below), whose sum is σ = 233804480. Its totient is φ = 27848448.

The previous prime is 91775881. The next prime is 91775897. The reversal of 91775892 is 29857719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91775897) by changing a digit.

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, 7359 + ... + 15417.

Almost surely, 2^91775892 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 91775892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116902240).

91775892 is an abundant number, since it is smaller than the sum of its proper divisors (142028588).

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

91775892 is a wasteful number, since it uses less digits than its factorization.

91775892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8152 (or 8150 counting only the distinct ones).

The product of its digits is 317520, while the sum is 48.

The square root of 91775892 is about 9579.9734863934. The cubic root of 91775892 is about 451.0688862219.

The spelling of 91775892 in words is "ninety-one million, seven hundred seventy-five thousand, eight hundred ninety-two".