889985 has 16 divisors (see below), whose sum is σ = 1140480. Its totient is φ = 665280.

The previous prime is 889963. The next prime is 889997. The reversal of 889985 is 589988.

It is a happy number.

It is not a de Polignac number, because 889985 - 2⁶ = 889921 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 889985.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8111 + ... + 8219.

It is an arithmetic number, because the mean of its divisors is an integer number (71280).

2⁸⁸⁹⁹⁸⁵ is an apocalyptic number.

889985 is the 545-th octagonal number.

It is an amenable number.

889985 is a deficient number, since it is larger than the sum of its proper divisors (250495).

889985 is a wasteful number, since it uses less digits than its factorization.

889985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208.

The product of its digits is 207360, while the sum is 47.

The square root of 889985 is about 943.3901631881. The cubic root of 889985 is about 96.1894767644.

The spelling of 889985 in words is "eight hundred eighty-nine thousand, nine hundred eighty-five".