6339943013 has 4 divisors (see below), whose sum is σ = 6402714828. Its totient is φ = 6277171200.

The previous prime is 6339943003. The next prime is 6339943019. The reversal of 6339943013 is 3103499336.

6339943013 = 56302² + 56303².

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

It can be written as a sum of positive squares in 2 ways, for example, as 3170027809 + 3169915204 = 56303^2 + 56302^2 .

It is a cyclic number.

It is not a de Polignac number, because 6339943013 - 2¹⁶ = 6339877477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6339943019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31385756 + ... + 31385957.

It is an arithmetic number, because the mean of its divisors is an integer number (1600678707).

Almost surely, 2^6339943013 is an apocalyptic number.

6339943013 is the 56303-rd centered square number.

It is an amenable number.

6339943013 is a deficient number, since it is larger than the sum of its proper divisors (62771815).

6339943013 is a wasteful number, since it uses less digits than its factorization.

6339943013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62771814.

The product of its (nonzero) digits is 157464, while the sum is 41.

The square root of 6339943013 is about 79623.7590986510. The cubic root of 6339943013 is about 1850.8097758100.

The spelling of 6339943013 in words is "six billion, three hundred thirty-nine million, nine hundred forty-three thousand, thirteen".