679394369 has 2 divisors, whose sum is σ = 679394370. Its totient is φ = 679394368.

The previous prime is 679394363. The next prime is 679394383. The reversal of 679394369 is 963493976.

679394369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 510082225 + 169312144 = 22585^2 + 13012^2 .

It is a cyclic number.

It is not a de Polignac number, because 679394369 - 2⁸ = 679394113 is a prime.

It is a super-2 number, since 2×679394369² = 923153417257816322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (679394363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339697184 + 339697185.

It is an arithmetic number, because the mean of its divisors is an integer number (339697185).

Almost surely, 2^679394369 is an apocalyptic number.

It is an amenable number.

679394369 is a deficient number, since it is larger than the sum of its proper divisors (1).

679394369 is an equidigital number, since it uses as much as digits as its factorization.

679394369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6613488, while the sum is 56.

The square root of 679394369 is about 26065.1945897206. The cubic root of 679394369 is about 879.1047925409.

The spelling of 679394369 in words is "six hundred seventy-nine million, three hundred ninety-four thousand, three hundred sixty-nine".