79117643 has 32 divisors (see below), whose sum is σ = 95178240. Its totient is φ = 64960000.

The previous prime is 79117627. The next prime is 79117651. The reversal of 79117643 is 34671197.

It is a cyclic number.

It is not a de Polignac number, because 79117643 - 2⁴ = 79117627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79117597 and 79117606.

It is not an unprimeable number, because it can be changed into a prime (79117603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 783293 + ... + 783393.

It is an arithmetic number, because the mean of its divisors is an integer number (2974320).

Almost surely, 2^79117643 is an apocalyptic number.

79117643 is a deficient number, since it is larger than the sum of its proper divisors (16060597).

79117643 is a wasteful number, since it uses less digits than its factorization.

79117643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259.

The product of its digits is 31752, while the sum is 38.

The square root of 79117643 is about 8894.8098911669. The cubic root of 79117643 is about 429.2969275039.

The spelling of 79117643 in words is "seventy-nine million, one hundred seventeen thousand, six hundred forty-three".