79943579 has 8 divisors (see below), whose sum is σ = 82452480. Its totient is φ = 77464296.

The previous prime is 79943573. The next prime is 79943593. The reversal of 79943579 is 97534997.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79943579 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79943579.

It is not an unprimeable number, because it can be changed into a prime (79943573) 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, 1859 + ... + 12780.

It is an arithmetic number, because the mean of its divisors is an integer number (10306560).

Almost surely, 2^79943579 is an apocalyptic number.

79943579 is a deficient number, since it is larger than the sum of its proper divisors (2508901).

79943579 is a wasteful number, since it uses less digits than its factorization.

79943579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14809.

The product of its digits is 2143260, while the sum is 53.

The square root of 79943579 is about 8941.1173239143. The cubic root of 79943579 is about 430.7856180505.

The spelling of 79943579 in words is "seventy-nine million, nine hundred forty-three thousand, five hundred seventy-nine".