3899387544 has 128 divisors (see below), whose sum is σ = 10688025600. Its totient is φ = 1178311680.

The previous prime is 3899387543. The next prime is 3899387551. The reversal of 3899387544 is 4457839983.

Its product of digits (26127360) is a multiple of the sum of its prime factors (945).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3899387543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6925807 + ... + 6926369.

It is an arithmetic number, because the mean of its divisors is an integer number (83500200).

Almost surely, 2^3899387544 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 3899387544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5344012800).

3899387544 is an abundant number, since it is smaller than the sum of its proper divisors (6788638056).

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

3899387544 is a wasteful number, since it uses less digits than its factorization.

3899387544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945 (or 941 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 60.

The square root of 3899387544 is about 62445.0762190263. The cubic root of 3899387544 is about 1573.9785154758.

The spelling of 3899387544 in words is "three billion, eight hundred ninety-nine million, three hundred eighty-seven thousand, five hundred forty-four".