6399830743 has 12 divisors (see below), whose sum is σ = 6972287808. Its totient is φ = 5867406720.

The previous prime is 6399830683. The next prime is 6399830747. The reversal of 6399830743 is 3470389936.

It is a de Polignac number, because none of the positive numbers 2^k-6399830743 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 (6399830747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 274746 + ... + 297127.

It is an arithmetic number, because the mean of its divisors is an integer number (581023984).

Almost surely, 2^6399830743 is an apocalyptic number.

6399830743 is a deficient number, since it is larger than the sum of its proper divisors (572457065).

6399830743 is a wasteful number, since it uses less digits than its factorization.

6399830743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571942 (or 571923 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 52.

The square root of 6399830743 is about 79998.9421367558. The cubic root of 6399830743 is about 1856.6191661883.

The spelling of 6399830743 in words is "six billion, three hundred ninety-nine million, eight hundred thirty thousand, seven hundred forty-three".