91864412 has 6 divisors (see below), whose sum is σ = 160762728. Its totient is φ = 45932204.

The previous prime is 91864363. The next prime is 91864429. The reversal of 91864412 is 21446819.

It is a happy number.

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 as a sum of consecutive naturals, namely, 11483048 + ... + 11483055.

It is an arithmetic number, because the mean of its divisors is an integer number (26793788).

Almost surely, 2^91864412 is an apocalyptic number.

It is an amenable number.

91864412 is a deficient number, since it is larger than the sum of its proper divisors (68898316).

91864412 is a wasteful number, since it uses less digits than its factorization.

91864412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22966107 (or 22966105 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 91864412 is about 9584.5924274327. The cubic root of 91864412 is about 451.2138617939.

The spelling of 91864412 in words is "ninety-one million, eight hundred sixty-four thousand, four hundred twelve".