6383940939 has 16 divisors (see below), whose sum is σ = 9460771200. Its totient is φ = 4254574248.

The previous prime is 6383940923. The next prime is 6383940943. The reversal of 6383940939 is 9390493836.

It is a happy number.

It is not a de Polignac number, because 6383940939 - 2⁴ = 6383940923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6383940239) 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 15 ways as a sum of consecutive naturals, for example, 49572 + ... + 123390.

It is an arithmetic number, because the mean of its divisors is an integer number (591298200).

Almost surely, 2^6383940939 is an apocalyptic number.

6383940939 is a deficient number, since it is larger than the sum of its proper divisors (3076830261).

6383940939 is a wasteful number, since it uses less digits than its factorization.

6383940939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77031 (or 77025 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 54.

The square root of 6383940939 is about 79899.5678273669. The cubic root of 6383940939 is about 1855.0813253022.

The spelling of 6383940939 in words is "six billion, three hundred eighty-three million, nine hundred forty thousand, nine hundred thirty-nine".