79235609 has 2 divisors, whose sum is σ = 79235610. Its totient is φ = 79235608.

The previous prime is 79235593. The next prime is 79235617. The reversal of 79235609 is 90653297.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56957209 + 22278400 = 7547^2 + 4720^2 .

It is a cyclic number.

It is not a de Polignac number, because 79235609 - 2⁴ = 79235593 is a prime.

It is not a weakly prime, because it can be changed into another prime (79235669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39617804 + 39617805.

It is an arithmetic number, because the mean of its divisors is an integer number (39617805).

Almost surely, 2^79235609 is an apocalyptic number.

It is an amenable number.

79235609 is a deficient number, since it is larger than the sum of its proper divisors (1).

79235609 is an equidigital number, since it uses as much as digits as its factorization.

79235609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 79235609 is about 8901.4385915986. The cubic root of 79235609 is about 429.5101850051.

The spelling of 79235609 in words is "seventy-nine million, two hundred thirty-five thousand, six hundred nine".