79682969 has 2 divisors, whose sum is σ = 79682970. Its totient is φ = 79682968.

The previous prime is 79682957. The next prime is 79683031. The reversal of 79682969 is 96928697.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73753744 + 5929225 = 8588^2 + 2435^2 .

It is an emirp because it is prime and its reverse (96928697) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79682969 - 2²⁰ = 78634393 is a prime.

It is a super-2 number, since 2×79682969² = 12698751097309922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (79682909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39841484 + 39841485.

It is an arithmetic number, because the mean of its divisors is an integer number (39841485).

Almost surely, 2^79682969 is an apocalyptic number.

It is an amenable number.

79682969 is a deficient number, since it is larger than the sum of its proper divisors (1).

79682969 is an equidigital number, since it uses as much as digits as its factorization.

79682969 is an evil number, because the sum of its binary digits is even.

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

The square root of 79682969 is about 8926.5317453085. The cubic root of 79682969 is about 430.3169989871.

The spelling of 79682969 in words is "seventy-nine million, six hundred eighty-two thousand, nine hundred sixty-nine".