3944841968 has 20 divisors (see below), whose sum is σ = 7653933480. Its totient is φ = 1969633344.

The previous prime is 3944841919. The next prime is 3944841983. The reversal of 3944841968 is 8691484493.

It is a super-2 number, since 2×3944841968² = 31123556304988226048, which contains 22 as substring.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

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, 162530 + ... + 185217.

It is an arithmetic number, because the mean of its divisors is an integer number (382696674).

Almost surely, 2^3944841968 is an apocalyptic number.

It is an amenable number.

3944841968 is a deficient number, since it is larger than the sum of its proper divisors (3709091512).

3944841968 is a wasteful number, since it uses less digits than its factorization.

3944841968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348464 (or 348458 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 56.

The square root of 3944841968 is about 62807.9769456078. The cubic root of 3944841968 is about 1580.0707611315.

The spelling of 3944841968 in words is "three billion, nine hundred forty-four million, eight hundred forty-one thousand, nine hundred sixty-eight".