3994871976 has 48 divisors (see below), whose sum is σ = 10823211360. Its totient is φ = 1331160480.

The previous prime is 3994871927. The next prime is 3994871977. The reversal of 3994871976 is 6791784993.

3994871976 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3994871977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 244891 + ... + 260693.

It is an arithmetic number, because the mean of its divisors is an integer number (225483570).

Almost surely, 2^3994871976 is an apocalyptic number.

3994871976 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3994871976 is an abundant number, since it is smaller than the sum of its proper divisors (6828339384).

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

3994871976 is a wasteful number, since it uses less digits than its factorization.

3994871976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19326 (or 19319 counting only the distinct ones).

The product of its digits is 20575296, while the sum is 63.

The square root of 3994871976 is about 63204.9996123724. Note that the first 3 decimals coincide. The cubic root of 3994871976 is about 1586.7224093199.

The spelling of 3994871976 in words is "three billion, nine hundred ninety-four million, eight hundred seventy-one thousand, nine hundred seventy-six".