3989529444 has 12 divisors (see below), whose sum is σ = 9308902064. Its totient is φ = 1329843144.

The previous prime is 3989529443. The next prime is 3989529493. The reversal of 3989529444 is 4449259893.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (3989529443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166230382 + ... + 166230405.

Almost surely, 2^3989529444 is an apocalyptic number.

It is an amenable number.

3989529444 is an abundant number, since it is smaller than the sum of its proper divisors (5319372620).

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

3989529444 is a wasteful number, since it uses less digits than its factorization.

3989529444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332460794 (or 332460792 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 57.

The square root of 3989529444 is about 63162.7219489471. The cubic root of 3989529444 is about 1586.0147606929.

The spelling of 3989529444 in words is "three billion, nine hundred eighty-nine million, five hundred twenty-nine thousand, four hundred forty-four".