79715919 has 8 divisors (see below), whose sum is σ = 106341120. Its totient is φ = 53117336.

The previous prime is 79715899. The next prime is 79715957. The reversal of 79715919 is 91951797.

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 not a de Polignac number, because 79715919 - 2⁷ = 79715791 is a prime.

It is a super-2 number, since 2×79715919² = 12709255484029122, which contains 22 as substring.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1912 + ... + 12770.

It is an arithmetic number, because the mean of its divisors is an integer number (13292640).

Almost surely, 2^79715919 is an apocalyptic number.

79715919 is a deficient number, since it is larger than the sum of its proper divisors (26625201).

79715919 is a wasteful number, since it uses less digits than its factorization.

79715919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13309.

The product of its digits is 178605, while the sum is 48.

The square root of 79715919 is about 8928.3771761726. The cubic root of 79715919 is about 430.3763048060.

The spelling of 79715919 in words is "seventy-nine million, seven hundred fifteen thousand, nine hundred nineteen".