79923 has 4 divisors (see below), whose sum is σ = 106568. Its totient is φ = 53280.

The previous prime is 79907. The next prime is 79939. The reversal of 79923 is 32997.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (79907) and next prime (79939).

It is not a de Polignac number, because 79923 - 2⁴ = 79907 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79903) 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, 13318 + ... + 13323.

It is an arithmetic number, because the mean of its divisors is an integer number (26642).

2⁷⁹⁹²³ is an apocalyptic number.

79923 is a deficient number, since it is larger than the sum of its proper divisors (26645).

79923 is a wasteful number, since it uses less digits than its factorization.

79923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26644.

The product of its digits is 3402, while the sum is 30.

The square root of 79923 is about 282.7065616501. The cubic root of 79923 is about 43.0748650737.

The spelling of 79923 in words is "seventy-nine thousand, nine hundred twenty-three".