6839311439 has 2 divisors, whose sum is σ = 6839311440. Its totient is φ = 6839311438.

The previous prime is 6839311417. The next prime is 6839311517. The reversal of 6839311439 is 9341139386.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6839311439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6839311393 and 6839311402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6839317439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3419655719 + 3419655720.

It is an arithmetic number, because the mean of its divisors is an integer number (3419655720).

Almost surely, 2^6839311439 is an apocalyptic number.

6839311439 is a deficient number, since it is larger than the sum of its proper divisors (1).

6839311439 is an equidigital number, since it uses as much as digits as its factorization.

6839311439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 419904, while the sum is 47.

The square root of 6839311439 is about 82700.1296190036. The cubic root of 6839311439 is about 1898.1802927441.

The spelling of 6839311439 in words is "six billion, eight hundred thirty-nine million, three hundred eleven thousand, four hundred thirty-nine".