889122642489 has 27 divisors (see below), whose sum is σ = 1290360013423. Its totient is φ = 589959232512.

The previous prime is 889122642481. The next prime is 889122642517. The reversal of 889122642489 is 984246221988.

The square root of 889122642489 is 942933.

It is a perfect power (a square), and thus also a powerful number.

889122642489 is a `hidden beast` number, since 8 + 8 + 9 + 122 + 6 + 424 + 89 = 666.

It can be written as a sum of positive squares in only one way, i.e., 875338004025 + 13784638464 = 935595^2 + 117408^2 .

It is not a de Polignac number, because 889122642489 - 2³ = 889122642481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (889122642481) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 727000732 + ... + 727001954.

Almost surely, 2^889122642489 is an apocalyptic number.

889122642489 is the 942933-rd square number.

889122642489 is the 471467-th centered octagonal number.

It is an amenable number.

889122642489 is a deficient number, since it is larger than the sum of its proper divisors (401237370934).

889122642489 is an frugal number, since it uses more digits than its factorization.

889122642489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2966 (or 1483 counting only the distinct ones).

The product of its digits is 31850496, while the sum is 63.

The spelling of 889122642489 in words is "eight hundred eighty-nine billion, one hundred twenty-two million, six hundred forty-two thousand, four hundred eighty-nine".