679937329 has 2 divisors, whose sum is σ = 679937330. Its totient is φ = 679937328.

The previous prime is 679937309. The next prime is 679937333. The reversal of 679937329 is 923739976.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 664350625 + 15586704 = 25775^2 + 3948^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-679937329 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 679937329.

It is not a weakly prime, because it can be changed into another prime (679937309) 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, 339968664 + 339968665.

It is an arithmetic number, because the mean of its divisors is an integer number (339968665).

Almost surely, 2^679937329 is an apocalyptic number.

It is an amenable number.

679937329 is a deficient number, since it is larger than the sum of its proper divisors (1).

679937329 is an equidigital number, since it uses as much as digits as its factorization.

679937329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3857868, while the sum is 55.

The square root of 679937329 is about 26075.6079315517. The cubic root of 679937329 is about 879.3389185318.

The spelling of 679937329 in words is "six hundred seventy-nine million, nine hundred thirty-seven thousand, three hundred twenty-nine".