79007609 has 2 divisors, whose sum is σ = 79007610. Its totient is φ = 79007608.

The previous prime is 79007587. The next prime is 79007651. The reversal of 79007609 is 90670097.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74995600 + 4012009 = 8660^2 + 2003^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79007609 is a prime.

It is not a weakly prime, because it can be changed into another prime (79007659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39503804 + 39503805.

It is an arithmetic number, because the mean of its divisors is an integer number (39503805).

Almost surely, 2^79007609 is an apocalyptic number.

It is an amenable number.

79007609 is a deficient number, since it is larger than the sum of its proper divisors (1).

79007609 is an equidigital number, since it uses as much as digits as its factorization.

79007609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 79007609 is about 8888.6224467012. The cubic root of 79007609 is about 429.0978182118.

The spelling of 79007609 in words is "seventy-nine million, seven thousand, six hundred nine".