6779339839 has 2 divisors, whose sum is σ = 6779339840. Its totient is φ = 6779339838.

The previous prime is 6779339771. The next prime is 6779339851. The reversal of 6779339839 is 9389339776.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6779339839 - 2⁷ = 6779339711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6779439839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3389669919 + 3389669920.

It is an arithmetic number, because the mean of its divisors is an integer number (3389669920).

Almost surely, 2^6779339839 is an apocalyptic number.

6779339839 is a deficient number, since it is larger than the sum of its proper divisors (1).

6779339839 is an equidigital number, since it uses as much as digits as its factorization.

6779339839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46294416, while the sum is 64.

The square root of 6779339839 is about 82336.7465898429. The cubic root of 6779339839 is about 1892.6158304392.

The spelling of 6779339839 in words is "six billion, seven hundred seventy-nine million, three hundred thirty-nine thousand, eight hundred thirty-nine".