2489947776 has 320 divisors, whose sum is σ = 7835688960. Its totient is φ = 783820800.

The previous prime is 2489947763. The next prime is 2489947781. The reversal of 2489947776 is 6777499842.

2489947776 is a `hidden beast` number, since 2 + 4 + 8 + 99 + 477 + 76 = 666.

Its product of digits (42674688) is a multiple of the sum of its prime divisors (224).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 19605825 + ... + 19605951.

It is an arithmetic number, because the mean of its divisors is an integer number (24486528).

Almost surely, 2^2489947776 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 2489947776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3917844480).

2489947776 is an abundant number, since it is smaller than the sum of its proper divisors (5345741184).

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

2489947776 is a wasteful number, since it uses less digits than its factorization.

2489947776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 224 counting only the distinct ones).

The product of its digits is 42674688, while the sum is 63.

The square root of 2489947776 is about 49899.3765091309. The cubic root of 2489947776 is about 1355.3873024929.

The spelling of 2489947776 in words is "two billion, four hundred eighty-nine million, nine hundred forty-seven thousand, seven hundred seventy-six".