2489869440 has 192 divisors, whose sum is σ = 9050745600. Its totient is φ = 628992000.

The previous prime is 2489869433. The next prime is 2489869471. The reversal of 2489869440 is 449689842.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98065 + ... + 120815.

It is an arithmetic number, because the mean of its divisors is an integer number (47139300).

Almost surely, 2^2489869440 is an apocalyptic number.

2489869440 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 2489869440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4525372800).

2489869440 is an abundant number, since it is smaller than the sum of its proper divisors (6560876160).

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

2489869440 is a wasteful number, since it uses less digits than its factorization.

2489869440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22795 (or 22780 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 54.

The square root of 2489869440 is about 49898.5915632896. The cubic root of 2489869440 is about 1355.3730884421.

The spelling of 2489869440 in words is "two billion, four hundred eighty-nine million, eight hundred sixty-nine thousand, four hundred forty".