679602439 has 2 divisors, whose sum is σ = 679602440. Its totient is φ = 679602438.

The previous prime is 679602409. The next prime is 679602457. The reversal of 679602439 is 934206976.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 679602439 - 2⁷ = 679602311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679602409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339801219 + 339801220.

It is an arithmetic number, because the mean of its divisors is an integer number (339801220).

Almost surely, 2^679602439 is an apocalyptic number.

679602439 is a deficient number, since it is larger than the sum of its proper divisors (1).

679602439 is an equidigital number, since it uses as much as digits as its factorization.

679602439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 46.

The square root of 679602439 is about 26069.1856221095. The cubic root of 679602439 is about 879.1945276896.

The spelling of 679602439 in words is "six hundred seventy-nine million, six hundred two thousand, four hundred thirty-nine".