6399392832 has 168 divisors, whose sum is σ = 21474940032. Its totient is φ = 1783756800.

The previous prime is 6399392801. The next prime is 6399392843. The reversal of 6399392832 is 2382939936.

It is a tau number, because it is divible by the number of its divisors (168).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145957 + ... + 184667.

It is an arithmetic number, because the mean of its divisors is an integer number (127827024).

Almost surely, 2^6399392832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6399392832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10737470016).

6399392832 is an abundant number, since it is smaller than the sum of its proper divisors (15075547200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6399392832 is a wasteful number, since it uses less digits than its factorization.

6399392832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38777 (or 38764 counting only the distinct ones).

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

The square root of 6399392832 is about 79996.2051099926. The cubic root of 6399392832 is about 1856.5768185840.

The spelling of 6399392832 in words is "six billion, three hundred ninety-nine million, three hundred ninety-two thousand, eight hundred thirty-two".