3978833944 has 16 divisors (see below), whose sum is σ = 7465791600. Its totient is φ = 1987956192.

The previous prime is 3978833939. The next prime is 3978833953. The reversal of 3978833944 is 4493388793.

It is a super-2 number, since 2×3978833944² = 31662239107853190272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170979 + ... + 192850.

It is an arithmetic number, because the mean of its divisors is an integer number (466611975).

Almost surely, 2^3978833944 is an apocalyptic number.

It is an amenable number.

3978833944 is a deficient number, since it is larger than the sum of its proper divisors (3486957656).

3978833944 is a wasteful number, since it uses less digits than its factorization.

3978833944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365202 (or 365198 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 58.

The square root of 3978833944 is about 63077.9988902628. The cubic root of 3978833944 is about 1584.5961804996.

The spelling of 3978833944 in words is "three billion, nine hundred seventy-eight million, eight hundred thirty-three thousand, nine hundred forty-four".