3994872000 has 672 divisors, whose sum is σ = 15900318720. Its totient is φ = 880588800.

The previous prime is 3994871977. The next prime is 3994872017. The reversal of 3994872000 is 2784993.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 50567961 + ... + 50568039.

Almost surely, 2^3994872000 is an apocalyptic number.

3994872000 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 3994872000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7950159360).

3994872000 is an abundant number, since it is smaller than the sum of its proper divisors (11905446720).

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

3994872000 is a wasteful number, since it uses less digits than its factorization.

3994872000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 3994872000 is about 63204.9998022308. Note that the first 3 decimals coincide. The cubic root of 3994872000 is about 1586.7224124974.

The spelling of 3994872000 in words is "three billion, nine hundred ninety-four million, eight hundred seventy-two thousand".