3999646200 has 192 divisors, whose sum is σ = 13561096320. Its totient is φ = 967104000.

The previous prime is 3999646199. The next prime is 3999646213. The reversal of 3999646200 is 26469993.

It is a self number, because there is not a number n which added to its sum of digits gives 3999646200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4560162 + ... + 4561038.

It is an arithmetic number, because the mean of its divisors is an integer number (70630710).

Almost surely, 2^3999646200 is an apocalyptic number.

3999646200 is a gapful number since it is divisible by the number (30) 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 3999646200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6780548160).

3999646200 is an abundant number, since it is smaller than the sum of its proper divisors (9561450120).

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

3999646200 is a wasteful number, since it uses less digits than its factorization.

3999646200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598 (or 1589 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 48.

The square root of 3999646200 is about 63242.7561069250. The cubic root of 3999646200 is about 1587.3542487139.

The spelling of 3999646200 in words is "three billion, nine hundred ninety-nine million, six hundred forty-six thousand, two hundred".