6399952792 has 16 divisors (see below), whose sum is σ = 12116417040. Its totient is φ = 3168908256.

The previous prime is 6399952781. The next prime is 6399952807. The reversal of 6399952792 is 2972599936.

It is a self number, because there is not a number n which added to its sum of digits gives 6399952792.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3882643 + ... + 3884290.

It is an arithmetic number, because the mean of its divisors is an integer number (757276065).

Almost surely, 2^6399952792 is an apocalyptic number.

It is an amenable number.

6399952792 is a deficient number, since it is larger than the sum of its proper divisors (5716464248).

6399952792 is a wasteful number, since it uses less digits than its factorization.

6399952792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7767042 (or 7767038 counting only the distinct ones).

The product of its digits is 16533720, while the sum is 61.

The square root of 6399952792 is about 79999.7049494559. The cubic root of 6399952792 is about 1856.6309684313.

The spelling of 6399952792 in words is "six billion, three hundred ninety-nine million, nine hundred fifty-two thousand, seven hundred ninety-two".