79198559 has 4 divisors (see below), whose sum is σ = 86398440. Its totient is φ = 71998680.

The previous prime is 79198549. The next prime is 79198571. The reversal of 79198559 is 95589197.

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

It is a cyclic number.

It is not a de Polignac number, because 79198559 - 2⁴ = 79198543 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 79198559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79198549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3599924 + ... + 3599945.

It is an arithmetic number, because the mean of its divisors is an integer number (21599610).

Almost surely, 2^79198559 is an apocalyptic number.

79198559 is a deficient number, since it is larger than the sum of its proper divisors (7199881).

79198559 is a wasteful number, since it uses less digits than its factorization.

79198559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7199880.

The product of its digits is 1020600, while the sum is 53.

The square root of 79198559 is about 8899.3572239797. The cubic root of 79198559 is about 429.4432292785.

The spelling of 79198559 in words is "seventy-nine million, one hundred ninety-eight thousand, five hundred fifty-nine".