79715999 has 8 divisors (see below), whose sum is σ = 90744192. Its totient is φ = 69318040.

The previous prime is 79715981. The next prime is 79716037. The reversal of 79715999 is 99951797.

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

It is not a de Polignac number, because 79715999 - 2⁸ = 79715743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79715969) 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, 157289 + ... + 157794.

It is an arithmetic number, because the mean of its divisors is an integer number (11343024).

Almost surely, 2^79715999 is an apocalyptic number.

79715999 is a deficient number, since it is larger than the sum of its proper divisors (11028193).

79715999 is a wasteful number, since it uses less digits than its factorization.

79715999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315117.

The product of its digits is 1607445, while the sum is 56.

The square root of 79715999 is about 8928.3816562690. The cubic root of 79715999 is about 430.3764487759.

The spelling of 79715999 in words is "seventy-nine million, seven hundred fifteen thousand, nine hundred ninety-nine".