3913887744 has 156 divisors (see below), whose sum is σ = 12176544016. Its totient is φ = 1204125696.

The previous prime is 3913887727. The next prime is 3913887751. The reversal of 3913887744 is 4477883193.

It is a tau number, because it is divible by the number of its divisors (156).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 475149 + ... + 483315.

Almost surely, 2^3913887744 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 3913887744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6088272008).

3913887744 is an abundant number, since it is smaller than the sum of its proper divisors (8262656272).

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

3913887744 is a wasteful number, since it uses less digits than its factorization.

3913887744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8210 (or 8185 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The square root of 3913887744 is about 62561.0721135755. The cubic root of 3913887744 is about 1575.9270925758.

The spelling of 3913887744 in words is "three billion, nine hundred thirteen million, eight hundred eighty-seven thousand, seven hundred forty-four".