79609466389 has 2 divisors, whose sum is σ = 79609466390. Its totient is φ = 79609466388.

The previous prime is 79609466383. The next prime is 79609466449. The reversal of 79609466389 is 98366490697.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57188896164 + 22420570225 = 239142^2 + 149735^2 .

It is an emirp because it is prime and its reverse (98366490697) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79609466389 - 2⁵ = 79609466357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79609466383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39804733194 + 39804733195.

It is an arithmetic number, because the mean of its divisors is an integer number (39804733195).

Almost surely, 2^79609466389 is an apocalyptic number.

It is an amenable number.

79609466389 is a deficient number, since it is larger than the sum of its proper divisors (1).

79609466389 is an equidigital number, since it uses as much as digits as its factorization.

79609466389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105815808, while the sum is 67.

The spelling of 79609466389 in words is "seventy-nine billion, six hundred nine million, four hundred sixty-six thousand, three hundred eighty-nine".