91943816 has 32 divisors (see below), whose sum is σ = 178770240. Its totient is φ = 44296128.

The previous prime is 91943807. The next prime is 91943821. The reversal of 91943816 is 61834919.

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, 30221 + ... + 33123.

It is an arithmetic number, because the mean of its divisors is an integer number (5586570).

Almost surely, 2^91943816 is an apocalyptic number.

It is an amenable number.

91943816 is a deficient number, since it is larger than the sum of its proper divisors (86826424).

91943816 is a wasteful number, since it uses less digits than its factorization.

91943816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3053 (or 3049 counting only the distinct ones).

The product of its digits is 46656, while the sum is 41.

The square root of 91943816 is about 9588.7338058786. The cubic root of 91943816 is about 451.3438282188.

The spelling of 91943816 in words is "ninety-one million, nine hundred forty-three thousand, eight hundred sixteen".