91973084 has 12 divisors (see below), whose sum is σ = 183946224. Its totient is φ = 39417024.

The previous prime is 91973069. The next prime is 91973107. The reversal of 91973084 is 48037919.

It is a happy number.

91973084 is an admirable number.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1642349 + ... + 1642404.

It is an arithmetic number, because the mean of its divisors is an integer number (15328852).

Almost surely, 2^91973084 is an apocalyptic number.

It is an amenable number.

91973084 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

91973084 is a wasteful number, since it uses less digits than its factorization.

91973084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3284764 (or 3284762 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 91973084 is about 9590.2598504941. The cubic root of 91973084 is about 451.3917144545.

The spelling of 91973084 in words is "ninety-one million, nine hundred seventy-three thousand, eighty-four".