3904579644 has 96 divisors (see below), whose sum is σ = 10617868800. Its totient is φ = 1093666560.

The previous prime is 3904579619. The next prime is 3904579681. The reversal of 3904579644 is 4469754093.

It is a happy number.

3904579644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2283862 + ... + 2285570.

It is an arithmetic number, because the mean of its divisors is an integer number (110602800).

Almost surely, 2^3904579644 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 3904579644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5308934400).

3904579644 is an abundant number, since it is smaller than the sum of its proper divisors (6713289156).

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

3904579644 is a wasteful number, since it uses less digits than its factorization.

3904579644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2243 (or 2241 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 51.

The square root of 3904579644 is about 62486.6357231688. The cubic root of 3904579644 is about 1574.6767985843.

The spelling of 3904579644 in words is "three billion, nine hundred four million, five hundred seventy-nine thousand, six hundred forty-four".