79093939 has 2 divisors, whose sum is σ = 79093940. Its totient is φ = 79093938.

The previous prime is 79093907. The next prime is 79093981. The reversal of 79093939 is 93939097.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79093939 - 2⁵ = 79093907 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79093892 and 79093901.

It is not a weakly prime, because it can be changed into another prime (79063939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39546969 + 39546970.

It is an arithmetic number, because the mean of its divisors is an integer number (39546970).

Almost surely, 2^79093939 is an apocalyptic number.

79093939 is a deficient number, since it is larger than the sum of its proper divisors (1).

79093939 is an equidigital number, since it uses as much as digits as its factorization.

79093939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 413343, while the sum is 49.

The square root of 79093939 is about 8893.4773289192. The cubic root of 79093939 is about 429.2540501278.

The spelling of 79093939 in words is "seventy-nine million, ninety-three thousand, nine hundred thirty-nine".