79937518 has 4 divisors (see below), whose sum is σ = 119906280. Its totient is φ = 39968758.

The previous prime is 79937513. The next prime is 79937521. The reversal of 79937518 is 81573997.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79937513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19984378 + ... + 19984381.

It is an arithmetic number, because the mean of its divisors is an integer number (29976570).

Almost surely, 2^79937518 is an apocalyptic number.

79937518 is a deficient number, since it is larger than the sum of its proper divisors (39968762).

79937518 is a wasteful number, since it uses less digits than its factorization.

79937518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39968761.

The product of its digits is 476280, while the sum is 49.

The square root of 79937518 is about 8940.7783777477. The cubic root of 79937518 is about 430.7747309656.

The spelling of 79937518 in words is "seventy-nine million, nine hundred thirty-seven thousand, five hundred eighteen".