91994922 has 48 divisors (see below), whose sum is σ = 222168960. Its totient is φ = 27340416.

The previous prime is 91994921. The next prime is 91994923. The reversal of 91994922 is 22949919.

It is an interprime number because it is at equal distance from previous prime (91994921) and next prime (91994923).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (91994921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2098 + ... + 13725.

It is an arithmetic number, because the mean of its divisors is an integer number (4628520).

Almost surely, 2^91994922 is an apocalyptic number.

91994922 is an abundant number, since it is smaller than the sum of its proper divisors (130174038).

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

91994922 is a wasteful number, since it uses less digits than its factorization.

91994922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15867 (or 15864 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 91994922 is about 9591.3983339240. The cubic root of 91994922 is about 451.4274376312.

The spelling of 91994922 in words is "ninety-one million, nine hundred ninety-four thousand, nine hundred twenty-two".