2489897466 has 72 divisors (see below), whose sum is σ = 6283398420. Its totient is φ = 710510976.

The previous prime is 2489897387. The next prime is 2489897467. The reversal of 2489897466 is 6647989842.

2489897466 is a `hidden beast` number, since 2 + 4 + 89 + 8 + 97 + 466 = 666.

2489897466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2242496025 + 247401441 = 47355^2 + 15729^2 .

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (2489897467) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1082830 + ... + 1085126.

Almost surely, 2^2489897466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2489897466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3141699210).

2489897466 is an abundant number, since it is smaller than the sum of its proper divisors (3793500954).

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

2489897466 is a wasteful number, since it uses less digits than its factorization.

2489897466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3548 (or 3538 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 63.

The square root of 2489897466 is about 49898.8723920691. The cubic root of 2489897466 is about 1355.3781737882.

The spelling of 2489897466 in words is "two billion, four hundred eighty-nine million, eight hundred ninety-seven thousand, four hundred sixty-six".