3944489000 has 64 divisors (see below), whose sum is σ = 9242588160. Its totient is φ = 1575662400.

The previous prime is 3944488973. The next prime is 3944489023. The reversal of 3944489000 is 9844493.

It is a super-2 number, since 2×3944489000² = 31117986942242000000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 884777 + ... + 889223.

It is an arithmetic number, because the mean of its divisors is an integer number (144415440).

Almost surely, 2^3944489000 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 3944489000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4621294080).

3944489000 is an abundant number, since it is smaller than the sum of its proper divisors (5298099160).

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

3944489000 is a wasteful number, since it uses less digits than its factorization.

3944489000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5355 (or 5341 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 3944489000 is about 62805.1669848907. The cubic root of 3944489000 is about 1580.0236336795.

The spelling of 3944489000 in words is "three billion, nine hundred forty-four million, four hundred eighty-nine thousand".