91159317 has 8 divisors (see below), whose sum is σ = 135050880. Its totient is φ = 60772860.

The previous prime is 91159309. The next prime is 91159319. The reversal of 91159317 is 71395119.

It is not a de Polignac number, because 91159317 - 2³ = 91159309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91159319) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 1688109 + ... + 1688162.

It is an arithmetic number, because the mean of its divisors is an integer number (16881360).

Almost surely, 2^91159317 is an apocalyptic number.

It is an amenable number.

91159317 is a deficient number, since it is larger than the sum of its proper divisors (43891563).

91159317 is a wasteful number, since it uses less digits than its factorization.

91159317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3376280 (or 3376274 counting only the distinct ones).

The product of its digits is 8505, while the sum is 36.

The square root of 91159317 is about 9547.7388422600. The cubic root of 91159317 is about 450.0564817993.

The spelling of 91159317 in words is "ninety-one million, one hundred fifty-nine thousand, three hundred seventeen".