79630913 has 2 divisors, whose sum is σ = 79630914. Its totient is φ = 79630912.

The previous prime is 79630891. The next prime is 79630927. The reversal of 79630913 is 31903697.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69022864 + 10608049 = 8308^2 + 3257^2 .

It is a cyclic number.

It is not a de Polignac number, because 79630913 - 2⁶ = 79630849 is a prime.

It is not a weakly prime, because it can be changed into another prime (79630933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39815456 + 39815457.

It is an arithmetic number, because the mean of its divisors is an integer number (39815457).

Almost surely, 2^79630913 is an apocalyptic number.

It is an amenable number.

79630913 is a deficient number, since it is larger than the sum of its proper divisors (1).

79630913 is an equidigital number, since it uses as much as digits as its factorization.

79630913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30618, while the sum is 38.

The square root of 79630913 is about 8923.6154668385. The cubic root of 79630913 is about 430.2232714660.

The spelling of 79630913 in words is "seventy-nine million, six hundred thirty thousand, nine hundred thirteen".