79997119 has 4 divisors (see below), whose sum is σ = 80084160. Its totient is φ = 79910080.

The previous prime is 79997101. The next prime is 79997131. The reversal of 79997119 is 91179997.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91179997 = 1213 ⋅75169.

It is a cyclic number.

It is not a de Polignac number, because 79997119 - 2⁷ = 79996991 is a prime.

It is a super-2 number, since 2×79997119² = 12799078096600322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79937119) 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, 42127 + ... + 43984.

It is an arithmetic number, because the mean of its divisors is an integer number (20021040).

Almost surely, 2^79997119 is an apocalyptic number.

79997119 is a deficient number, since it is larger than the sum of its proper divisors (87041).

79997119 is an equidigital number, since it uses as much as digits as its factorization.

79997119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87040.

The product of its digits is 321489, while the sum is 52.

The square root of 79997119 is about 8944.1108557531. The cubic root of 79997119 is about 430.8817655057.

The spelling of 79997119 in words is "seventy-nine million, nine hundred ninety-seven thousand, one hundred nineteen".