2489839644 has 96 divisors (see below), whose sum is σ = 6029323776. Its totient is φ = 799375360.

The previous prime is 2489839637. The next prime is 2489839657. The reversal of 2489839644 is 4469389842.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9687964 + ... + 9688220.

It is an arithmetic number, because the mean of its divisors is an integer number (62805456).

Almost surely, 2^2489839644 is an apocalyptic number.

It is an amenable number.

2489839644 is an abundant number, since it is smaller than the sum of its proper divisors (3539484132).

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

2489839644 is a wasteful number, since it uses less digits than its factorization.

2489839644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555 (or 553 counting only the distinct ones).

The product of its digits is 11943936, while the sum is 57.

The square root of 2489839644 is about 49898.2929968551. The cubic root of 2489839644 is about 1355.3676818858.

The spelling of 2489839644 in words is "two billion, four hundred eighty-nine million, eight hundred thirty-nine thousand, six hundred forty-four".