6456907439 has 4 divisors (see below), whose sum is σ = 6458218656. Its totient is φ = 6455596224.

The previous prime is 6456907421. The next prime is 6456907463. The reversal of 6456907439 is 9347096546.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6456907439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6456907409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648194 + ... + 658079.

It is an arithmetic number, because the mean of its divisors is an integer number (1614554664).

Almost surely, 2^6456907439 is an apocalyptic number.

6456907439 is a deficient number, since it is larger than the sum of its proper divisors (1311217).

6456907439 is a wasteful number, since it uses less digits than its factorization.

6456907439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311216.

The product of its (nonzero) digits is 4898880, while the sum is 53.

The square root of 6456907439 is about 80354.8843506106. The cubic root of 6456907439 is about 1862.1222393418.

The spelling of 6456907439 in words is "six billion, four hundred fifty-six million, nine hundred seven thousand, four hundred thirty-nine".