6879839 has 2 divisors, whose sum is σ = 6879840. Its totient is φ = 6879838.

The previous prime is 6879823. The next prime is 6879857. The reversal of 6879839 is 9389786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6879839 - 2⁴ = 6879823 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6879869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3439919 + 3439920.

It is an arithmetic number, because the mean of its divisors is an integer number (3439920).

Almost surely, 2^6879839 is an apocalyptic number.

6879839 is a deficient number, since it is larger than the sum of its proper divisors (1).

6879839 is an equidigital number, since it uses as much as digits as its factorization.

6879839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 50.

The square root of 6879839 is about 2622.9447192040. The cubic root of 6879839 is about 190.1922246649.

The spelling of 6879839 in words is "six million, eight hundred seventy-nine thousand, eight hundred thirty-nine".