3944463936 has 168 divisors, whose sum is σ = 12668829120. Its totient is φ = 1077931008.

The previous prime is 3944463907. The next prime is 3944463949. The reversal of 3944463936 is 6393644493.

It is a tau number, because it is divible by the number of its divisors (168).

It is a super-2 number, since 2×3944463936² = 31117591484809224192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 207270 + ... + 225498.

Almost surely, 2^3944463936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3944463936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6334414560).

3944463936 is an abundant number, since it is smaller than the sum of its proper divisors (8724365184).

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

3944463936 is a wasteful number, since it uses less digits than its factorization.

3944463936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18281 (or 18264 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 51.

The square root of 3944463936 is about 62804.9674468509. The cubic root of 3944463936 is about 1580.0202870866.

The spelling of 3944463936 in words is "three billion, nine hundred forty-four million, four hundred sixty-three thousand, nine hundred thirty-six".