79975719 has 12 divisors (see below), whose sum is σ = 115616592. Its totient is φ = 53272800.

The previous prime is 79975699. The next prime is 79975723. The reversal of 79975719 is 91757997.

It is not a de Polignac number, because 79975719 - 2¹¹ = 79973671 is a prime.

It is a super-2 number, since 2×79975719² = 12792231259133922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79977719) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10659 + ... + 16539.

It is an arithmetic number, because the mean of its divisors is an integer number (9634716).

Almost surely, 2^79975719 is an apocalyptic number.

79975719 is a deficient number, since it is larger than the sum of its proper divisors (35640873).

79975719 is a wasteful number, since it uses less digits than its factorization.

79975719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7398 (or 7395 counting only the distinct ones).

The product of its digits is 1250235, while the sum is 54.

The square root of 79975719 is about 8942.9144578264. The cubic root of 79975719 is about 430.8433404047.

The spelling of 79975719 in words is "seventy-nine million, nine hundred seventy-five thousand, seven hundred nineteen".