889889 has 24 divisors (see below), whose sum is σ = 1225728. Its totient is φ = 635040.

The previous prime is 889879. The next prime is 889891. The reversal of 889889 is 988988.

It is not a de Polignac number, because 889889 - 2⁴ = 889873 is a prime.

It is a Curzon number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (889829) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6944 + ... + 7070.

It is an arithmetic number, because the mean of its divisors is an integer number (51072).

2⁸⁸⁹⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

889889 is a deficient number, since it is larger than the sum of its proper divisors (335839).

889889 is a wasteful number, since it uses less digits than its factorization.

889889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 158 counting only the distinct ones).

The product of its digits is 331776, while the sum is 50.

The square root of 889889 is about 943.3392814889. The cubic root of 889889 is about 96.1860180837.

Subtracting 889889 from its reverse (988988), we obtain a palindrome (99099).

The spelling of 889889 in words is "eight hundred eighty-nine thousand, eight hundred eighty-nine".