91457937 has 8 divisors (see below), whose sum is σ = 135493280. Its totient is φ = 60971940.

The previous prime is 91457917. The next prime is 91457957. The reversal of 91457937 is 73975419.

It is an interprime number because it is at equal distance from previous prime (91457917) and next prime (91457957).

It is not a de Polignac number, because 91457937 - 2⁷ = 91457809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91457892 and 91457901.

It is not an unprimeable number, because it can be changed into a prime (91457917) 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 7 ways as a sum of consecutive naturals, for example, 1693639 + ... + 1693692.

It is an arithmetic number, because the mean of its divisors is an integer number (16936660).

Almost surely, 2^91457937 is an apocalyptic number.

It is an amenable number.

91457937 is a deficient number, since it is larger than the sum of its proper divisors (44035343).

91457937 is a wasteful number, since it uses less digits than its factorization.

91457937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3387340 (or 3387334 counting only the distinct ones).

The product of its digits is 238140, while the sum is 45.

The square root of 91457937 is about 9563.3643138803. The cubic root of 91457937 is about 450.5473783455.

The spelling of 91457937 in words is "ninety-one million, four hundred fifty-seven thousand, nine hundred thirty-seven".