79913517 has 8 divisors (see below), whose sum is σ = 106704480. Its totient is φ = 53199120.

The previous prime is 79913441. The next prime is 79913539. The reversal of 79913517 is 71531997.

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

It is not a de Polignac number, because 79913517 - 2¹⁸ = 79651373 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79913557) 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, 16659 + ... + 20912.

It is an arithmetic number, because the mean of its divisors is an integer number (13338060).

Almost surely, 2^79913517 is an apocalyptic number.

It is an amenable number.

79913517 is a deficient number, since it is larger than the sum of its proper divisors (26790963).

79913517 is a wasteful number, since it uses less digits than its factorization.

79913517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38283.

The product of its digits is 59535, while the sum is 42.

The square root of 79913517 is about 8939.4360560384. The cubic root of 79913517 is about 430.7316137097.

The spelling of 79913517 in words is "seventy-nine million, nine hundred thirteen thousand, five hundred seventeen".