917079913 has 4 divisors (see below), whose sum is σ = 946663168. Its totient is φ = 887496660.

The previous prime is 917079887. The next prime is 917079931. The reversal of 917079913 is 319970719.

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 917079913 - 2⁵ = 917079881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (917079313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14791581 + ... + 14791642.

It is an arithmetic number, because the mean of its divisors is an integer number (236665792).

Almost surely, 2^917079913 is an apocalyptic number.

It is an amenable number.

917079913 is a deficient number, since it is larger than the sum of its proper divisors (29583255).

917079913 is a wasteful number, since it uses less digits than its factorization.

917079913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29583254.

The product of its (nonzero) digits is 107163, while the sum is 46.

The square root of 917079913 is about 30283.3273105846. The cubic root of 917079913 is about 971.5587341641.

The spelling of 917079913 in words is "nine hundred seventeen million, seventy-nine thousand, nine hundred thirteen".