79968519 has 16 divisors (see below), whose sum is σ = 121228800. Its totient is φ = 52071768.

The previous prime is 79968487. The next prime is 79968521. The reversal of 79968519 is 91586997.

It is not a de Polignac number, because 79968519 - 2⁵ = 79968487 is a prime.

It is a super-2 number, since 2×79968519² = 12789928062106722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79968599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33279 + ... + 35600.

It is an arithmetic number, because the mean of its divisors is an integer number (7576800).

Almost surely, 2^79968519 is an apocalyptic number.

79968519 is a deficient number, since it is larger than the sum of its proper divisors (41260281).

79968519 is a wasteful number, since it uses less digits than its factorization.

79968519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68931 (or 68925 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 54.

The square root of 79968519 is about 8942.5118954352. The cubic root of 79968519 is about 430.8304107923.

The spelling of 79968519 in words is "seventy-nine million, nine hundred sixty-eight thousand, five hundred nineteen".