6439713 has 8 divisors (see below), whose sum is σ = 9812928. Its totient is φ = 3679824.

The previous prime is 6439703. The next prime is 6439717. The reversal of 6439713 is 3179346.

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

It is not a de Polignac number, because 6439713 - 2⁵ = 6439681 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

6439713 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6439717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153306 + ... + 153347.

It is an arithmetic number, because the mean of its divisors is an integer number (1226616).

Almost surely, 2^6439713 is an apocalyptic number.

It is an amenable number.

6439713 is a deficient number, since it is larger than the sum of its proper divisors (3373215).

6439713 is a wasteful number, since it uses less digits than its factorization.

6439713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306663.

The product of its digits is 13608, while the sum is 33.

The square root of 6439713 is about 2537.6589605382. The cubic root of 6439713 is about 186.0467855484.

The spelling of 6439713 in words is "six million, four hundred thirty-nine thousand, seven hundred thirteen".