2489978904 has 96 divisors (see below), whose sum is σ = 7253423280. Its totient is φ = 710228736.

The previous prime is 2489978903. The next prime is 2489978929. The reversal of 2489978904 is 4098799842.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2489978903) 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, 888834 + ... + 891630.

Almost surely, 2^2489978904 is an apocalyptic number.

2489978904 is a gapful number since it is divisible by the number (24) 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 2489978904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3626711640).

2489978904 is an abundant number, since it is smaller than the sum of its proper divisors (4763444376).

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

2489978904 is a wasteful number, since it uses less digits than its factorization.

2489978904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3577 (or 3566 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 60.

The square root of 2489978904 is about 49899.6884158609. The cubic root of 2489978904 is about 1355.3929505793.

The spelling of 2489978904 in words is "two billion, four hundred eighty-nine million, nine hundred seventy-eight thousand, nine hundred four".