3888799644 has 24 divisors (see below), whose sum is σ = 9198167440. Its totient is φ = 1278509184.

The previous prime is 3888799639. The next prime is 3888799679. The reversal of 3888799644 is 4469978883.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2218759 + ... + 2220510.

Almost surely, 2^3888799644 is an apocalyptic number.

It is an amenable number.

3888799644 is an abundant number, since it is smaller than the sum of its proper divisors (5309367796).

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

3888799644 is a wasteful number, since it uses less digits than its factorization.

3888799644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4439349 (or 4439347 counting only the distinct ones).

The product of its digits is 83607552, while the sum is 66.

The square root of 3888799644 is about 62360.2408911319. The cubic root of 3888799644 is about 1572.5526305828.

The spelling of 3888799644 in words is "three billion, eight hundred eighty-eight million, seven hundred ninety-nine thousand, six hundred forty-four".