91993192 has 32 divisors (see below), whose sum is σ = 180766080. Its totient is φ = 43806400.

The previous prime is 91993183. The next prime is 91993201. The reversal of 91993192 is 29139919.

It is an interprime number because it is at equal distance from previous prime (91993183) and next prime (91993201).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47442 + ... + 49342.

It is an arithmetic number, because the mean of its divisors is an integer number (5648940).

Almost surely, 2^91993192 is an apocalyptic number.

91993192 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

91993192 is a deficient number, since it is larger than the sum of its proper divisors (88772888).

91993192 is a wasteful number, since it uses less digits than its factorization.

91993192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193 (or 2189 counting only the distinct ones).

The product of its digits is 39366, while the sum is 43.

The square root of 91993192 is about 9591.3081485270. The cubic root of 91993192 is about 451.4246078577.

The spelling of 91993192 in words is "ninety-one million, nine hundred ninety-three thousand, one hundred ninety-two".