91039315 has 16 divisors (see below), whose sum is σ = 110702592. Its totient is φ = 71868384.

The previous prime is 91039309. The next prime is 91039327. The reversal of 91039315 is 51393019.

It is a cyclic number.

It is not a de Polignac number, because 91039315 - 2⁵ = 91039283 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194712 + ... + 195178.

It is an arithmetic number, because the mean of its divisors is an integer number (6918912).

Almost surely, 2^91039315 is an apocalyptic number.

91039315 is a deficient number, since it is larger than the sum of its proper divisors (19663277).

91039315 is a wasteful number, since it uses less digits than its factorization.

91039315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906.

The product of its (nonzero) digits is 3645, while the sum is 31.

The square root of 91039315 is about 9541.4524575664. The cubic root of 91039315 is about 449.8589105010.

The spelling of 91039315 in words is "ninety-one million, thirty-nine thousand, three hundred fifteen".