6456939 has 8 divisors (see below), whose sum is σ = 8664720. Its totient is φ = 4276896.

The previous prime is 6456929. The next prime is 6456943. The reversal of 6456939 is 9396546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6456939 - 2⁹ = 6456427 is a prime.

It is a super-2 number, since 2×6456939² = 83384122499442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6456939.

It is not an unprimeable number, because it can be changed into a prime (6456929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6384 + ... + 7325.

It is an arithmetic number, because the mean of its divisors is an integer number (1083090).

Almost surely, 2^6456939 is an apocalyptic number.

6456939 is a deficient number, since it is larger than the sum of its proper divisors (2207781).

6456939 is a wasteful number, since it uses less digits than its factorization.

6456939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13869.

The product of its digits is 174960, while the sum is 42.

The square root of 6456939 is about 2541.0507669073. The cubic root of 6456939 is about 186.2125273320.

The spelling of 6456939 in words is "six million, four hundred fifty-six thousand, nine hundred thirty-nine".