79124939 has 2 divisors, whose sum is σ = 79124940. Its totient is φ = 79124938.

The previous prime is 79124897. The next prime is 79124977. The reversal of 79124939 is 93942197.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79124939 - 2¹⁶ = 79059403 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79124939.

It is not a weakly prime, because it can be changed into another prime (79124999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39562469 + 39562470.

It is an arithmetic number, because the mean of its divisors is an integer number (39562470).

Almost surely, 2^79124939 is an apocalyptic number.

79124939 is a deficient number, since it is larger than the sum of its proper divisors (1).

79124939 is an equidigital number, since it uses as much as digits as its factorization.

79124939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 44.

The square root of 79124939 is about 8895.2200085214. The cubic root of 79124939 is about 429.3101232716.

The spelling of 79124939 in words is "seventy-nine million, one hundred twenty-four thousand, nine hundred thirty-nine".