79219923 has 12 divisors (see below), whose sum is σ = 108564120. Its totient is φ = 51383232.

The previous prime is 79219919. The next prime is 79219927. The reversal of 79219923 is 32991297.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (79219919) and next prime (79219927).

It is not a de Polignac number, because 79219923 - 2² = 79219919 is a prime.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (79219927) 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, 5538 + ... + 13751.

It is an arithmetic number, because the mean of its divisors is an integer number (9047010).

Almost surely, 2^79219923 is an apocalyptic number.

79219923 is a deficient number, since it is larger than the sum of its proper divisors (29344197).

79219923 is a wasteful number, since it uses less digits than its factorization.

79219923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19366 (or 19329 counting only the distinct ones).

The product of its digits is 61236, while the sum is 42.

The square root of 79219923 is about 8900.5574544519. The cubic root of 79219923 is about 429.4818402517.

The spelling of 79219923 in words is "seventy-nine million, two hundred nineteen thousand, nine hundred twenty-three".