79919 has 8 divisors (see below), whose sum is σ = 93600. Its totient is φ = 68208.

The previous prime is 79907. The next prime is 79939. The reversal of 79919 is 91997.

It is a happy number.

It is not a de Polignac number, because 79919 - 2⁴ = 79903 is a prime.

It is a super-2 number, since 2×79919² = 12774093122, 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 (79939) 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, 227 + ... + 459.

It is an arithmetic number, because the mean of its divisors is an integer number (11700).

2⁷⁹⁹¹⁹ is an apocalyptic number.

79919 is a deficient number, since it is larger than the sum of its proper divisors (13681).

79919 is an equidigital number, since it uses as much as digits as its factorization.

79919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 240 counting only the distinct ones).

The product of its digits is 5103, while the sum is 35.

The square root of 79919 is about 282.6994870883. The cubic root of 79919 is about 43.0741464556.

It can be divided in two parts, 7991 and 9, that added together give a cube (8000 = 20³).

The spelling of 79919 in words is "seventy-nine thousand, nine hundred nineteen".