91168937 has 4 divisors (see below), whose sum is σ = 91407360. Its totient is φ = 90930516.

The previous prime is 91168927. The next prime is 91168949. The reversal of 91168937 is 73986119.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 91168937 - 2⁶ = 91168873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91168907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118637 + ... + 119402.

It is an arithmetic number, because the mean of its divisors is an integer number (22851840).

Almost surely, 2^91168937 is an apocalyptic number.

It is an amenable number.

91168937 is a deficient number, since it is larger than the sum of its proper divisors (238423).

91168937 is a wasteful number, since it uses less digits than its factorization.

91168937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238422.

The product of its digits is 81648, while the sum is 44.

The square root of 91168937 is about 9548.2426131723. The cubic root of 91168937 is about 450.0723126589.

The spelling of 91168937 in words is "ninety-one million, one hundred sixty-eight thousand, nine hundred thirty-seven".