91976416 has 48 divisors (see below), whose sum is σ = 217848960. Its totient is φ = 37342080.

The previous prime is 91976393. The next prime is 91976447. The reversal of 91976416 is 61467919.

It is a happy number.

It is a super-2 number, since 2×91976416² = 16919322200410112, which contains 22 as substring.

It is a congruent number.

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, 6550 + ... + 15061.

It is an arithmetic number, because the mean of its divisors is an integer number (4538520).

Almost surely, 2^91976416 is an apocalyptic number.

It is an amenable number.

91976416 is an abundant number, since it is smaller than the sum of its proper divisors (125872544).

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

91976416 is a wasteful number, since it uses less digits than its factorization.

91976416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21647 (or 21639 counting only the distinct ones).

The product of its digits is 81648, while the sum is 43.

The square root of 91976416 is about 9590.4335668415. The cubic root of 91976416 is about 451.3971653936.

The spelling of 91976416 in words is "ninety-one million, nine hundred seventy-six thousand, four hundred sixteen".