79696289 has 4 divisors (see below), whose sum is σ = 84384324. Its totient is φ = 75008256.

The previous prime is 79696283. The next prime is 79696303. The reversal of 79696289 is 98269697.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26697889 + 52998400 = 5167^2 + 7280^2 .

It is a cyclic number.

It is not a de Polignac number, because 79696289 - 2⁴ = 79696273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79696283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2343992 + ... + 2344025.

It is an arithmetic number, because the mean of its divisors is an integer number (21096081).

Almost surely, 2^79696289 is an apocalyptic number.

It is an amenable number.

79696289 is a deficient number, since it is larger than the sum of its proper divisors (4688035).

79696289 is a wasteful number, since it uses less digits than its factorization.

79696289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4688034.

The product of its digits is 2939328, while the sum is 56.

The square root of 79696289 is about 8927.2778045718. The cubic root of 79696289 is about 430.3409752652.

The spelling of 79696289 in words is "seventy-nine million, six hundred ninety-six thousand, two hundred eighty-nine".