91297107 has 24 divisors (see below), whose sum is σ = 145153008. Its totient is φ = 54835200.

The previous prime is 91297091. The next prime is 91297169. The reversal of 91297107 is 70179219.

It is not a de Polignac number, because 91297107 - 2⁴ = 91297091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91297187) 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 23 ways as a sum of consecutive naturals, for example, 7107 + ... + 15267.

It is an arithmetic number, because the mean of its divisors is an integer number (6048042).

Almost surely, 2^91297107 is an apocalyptic number.

91297107 is a deficient number, since it is larger than the sum of its proper divisors (53855901).

91297107 is a wasteful number, since it uses less digits than its factorization.

91297107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8291 (or 8288 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 36.

The square root of 91297107 is about 9554.9519622026. The cubic root of 91297107 is about 450.2831255329.

The spelling of 91297107 in words is "ninety-one million, two hundred ninety-seven thousand, one hundred seven".