2489889900 has 72 divisors (see below), whose sum is σ = 7219537920. Its totient is φ = 662546240.

The previous prime is 2489889889. The next prime is 2489889901. The reversal of 2489889900 is 99889842.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2489889901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135037 + ... + 152363.

It is an arithmetic number, because the mean of its divisors is an integer number (100271360).

Almost surely, 2^2489889900 is an apocalyptic number.

2489889900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2489889900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3609768960).

2489889900 is an abundant number, since it is smaller than the sum of its proper divisors (4729648020).

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

2489889900 is a wasteful number, since it uses less digits than its factorization.

2489889900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17823 (or 17816 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 57.

The square root of 2489889900 is about 49898.7965786751. The cubic root of 2489889900 is about 1355.3768009336.

The spelling of 2489889900 in words is "two billion, four hundred eighty-nine million, eight hundred eighty-nine thousand, nine hundred".