79636393 has 2 divisors, whose sum is σ = 79636394. Its totient is φ = 79636392.

The previous prime is 79636351. The next prime is 79636409. The reversal of 79636393 is 39363697.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60652944 + 18983449 = 7788^2 + 4357^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79636393 is a prime.

It is not a weakly prime, because it can be changed into another prime (79634393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39818196 + 39818197.

It is an arithmetic number, because the mean of its divisors is an integer number (39818197).

Almost surely, 2^79636393 is an apocalyptic number.

It is an amenable number.

79636393 is a deficient number, since it is larger than the sum of its proper divisors (1).

79636393 is an equidigital number, since it uses as much as digits as its factorization.

79636393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 551124, while the sum is 46.

The square root of 79636393 is about 8923.9225119899. The cubic root of 79636393 is about 430.2331402023.

The spelling of 79636393 in words is "seventy-nine million, six hundred thirty-six thousand, three hundred ninety-three".