3944712816 has 120 divisors (see below), whose sum is σ = 12677283840. Its totient is φ = 1132444800.

The previous prime is 3944712809. The next prime is 3944712817. The reversal of 3944712816 is 6182174493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3944712817) by changing a digit.

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, 35440 + ... + 95631.

It is an arithmetic number, because the mean of its divisors is an integer number (105644032).

Almost surely, 2^3944712816 is an apocalyptic number.

3944712816 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3944712816 is an abundant number, since it is smaller than the sum of its proper divisors (8732571024).

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

3944712816 is a wasteful number, since it uses less digits than its factorization.

3944712816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131115 (or 131106 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 3944712816 is about 62806.9487875346. The cubic root of 3944712816 is about 1580.0535173882.

The spelling of 3944712816 in words is "three billion, nine hundred forty-four million, seven hundred twelve thousand, eight hundred sixteen".