3999512832 has 144 divisors (see below), whose sum is σ = 12249283200. Its totient is φ = 1134821376.

The previous prime is 3999512809. The next prime is 3999512851. The reversal of 3999512832 is 2382159993.

It is a super-2 number, since 2×3999512832² = 31992205786665320448, which contains 22 as substring.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 798528 + ... + 803520.

Almost surely, 2^3999512832 is an apocalyptic number.

3999512832 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3999512832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6124641600).

3999512832 is an abundant number, since it is smaller than the sum of its proper divisors (8249770368).

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

3999512832 is a wasteful number, since it uses less digits than its factorization.

3999512832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5168 (or 5154 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 51.

The square root of 3999512832 is about 63241.7016848851. The cubic root of 3999512832 is about 1587.3366051021.

The spelling of 3999512832 in words is "three billion, nine hundred ninety-nine million, five hundred twelve thousand, eight hundred thirty-two".