91937012 has 6 divisors (see below), whose sum is σ = 160889778. Its totient is φ = 45968504.

The previous prime is 91937011. The next prime is 91937017. The reversal of 91937012 is 21073919.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 60621796 + 31315216 = 7786^2 + 5596^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 91937012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91937011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11492123 + ... + 11492130.

It is an arithmetic number, because the mean of its divisors is an integer number (26814963).

Almost surely, 2^91937012 is an apocalyptic number.

It is an amenable number.

91937012 is a deficient number, since it is larger than the sum of its proper divisors (68952766).

91937012 is a wasteful number, since it uses less digits than its factorization.

91937012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22984257 (or 22984255 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 91937012 is about 9588.3790079450. The cubic root of 91937012 is about 451.3326945385.

The spelling of 91937012 in words is "ninety-one million, nine hundred thirty-seven thousand, twelve".