79641917 has 16 divisors (see below), whose sum is σ = 84888000. Its totient is φ = 74600064.

The previous prime is 79641869. The next prime is 79641931. The reversal of 79641917 is 71914697.

It is not a de Polignac number, because 79641917 - 2⁶ = 79641853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79641937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152018 + ... + 152540.

It is an arithmetic number, because the mean of its divisors is an integer number (5305500).

Almost surely, 2^79641917 is an apocalyptic number.

It is an amenable number.

79641917 is a deficient number, since it is larger than the sum of its proper divisors (5246083).

79641917 is a wasteful number, since it uses less digits than its factorization.

79641917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700.

The product of its digits is 95256, while the sum is 44.

The square root of 79641917 is about 8924.2320117756. The cubic root of 79641917 is about 430.2430877184.

The spelling of 79641917 in words is "seventy-nine million, six hundred forty-one thousand, nine hundred seventeen".