79718159 has 4 divisors (see below), whose sum is σ = 79923480. Its totient is φ = 79512840.

The previous prime is 79718153. The next prime is 79718183. The reversal of 79718159 is 95181797.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79718159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79718153) 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, 102077 + ... + 102854.

It is an arithmetic number, because the mean of its divisors is an integer number (19980870).

Almost surely, 2^79718159 is an apocalyptic number.

79718159 is a deficient number, since it is larger than the sum of its proper divisors (205321).

79718159 is a wasteful number, since it uses less digits than its factorization.

79718159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205320.

The product of its digits is 158760, while the sum is 47.

The square root of 79718159 is about 8928.5026180206. The cubic root of 79718159 is about 430.3803359284.

The spelling of 79718159 in words is "seventy-nine million, seven hundred eighteen thousand, one hundred fifty-nine".