889568289 has 6 divisors (see below), whose sum is σ = 1284931986. Its totient is φ = 593045520.

The previous prime is 889568269. The next prime is 889568297. The reversal of 889568289 is 982865988.

It can be written as a sum of positive squares in only one way, i.e., 781761600 + 107806689 = 27960^2 + 10383^2 .

It is not a de Polignac number, because 889568289 - 2⁷ = 889568161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (889568209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49420452 + ... + 49420469.

It is an arithmetic number, because the mean of its divisors is an integer number (214155331).

Almost surely, 2^889568289 is an apocalyptic number.

It is an amenable number.

889568289 is a deficient number, since it is larger than the sum of its proper divisors (395363697).

889568289 is a wasteful number, since it uses less digits than its factorization.

889568289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98840927 (or 98840924 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 63.

The square root of 889568289 is about 29825.6314099132. The cubic root of 889568289 is about 961.7446172831.

The spelling of 889568289 in words is "eight hundred eighty-nine million, five hundred sixty-eight thousand, two hundred eighty-nine".