917122013 has 8 divisors (see below), whose sum is σ = 951261600. Its totient is φ = 883150128.

The previous prime is 917122009. The next prime is 917122049. The reversal of 917122013 is 310221719.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 917122013 - 2² = 917122009 is a prime.

It is a super-2 number, since 2×917122013² = 1682225573458344338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (917122313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30731 + ... + 52712.

It is an arithmetic number, because the mean of its divisors is an integer number (118907700).

Almost surely, 2^917122013 is an apocalyptic number.

It is an amenable number.

917122013 is a deficient number, since it is larger than the sum of its proper divisors (34139587).

917122013 is a wasteful number, since it uses less digits than its factorization.

917122013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83851.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 917122013 is about 30284.0224045618. The cubic root of 917122013 is about 971.5736009153.

The spelling of 917122013 in words is "nine hundred seventeen million, one hundred twenty-two thousand, thirteen".