899885 has 12 divisors (see below), whose sum is σ = 1256508. Its totient is φ = 616896.

The previous prime is 899881. The next prime is 899891. The reversal of 899885 is 588998.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 170569 + 729316 = 413^2 + 854^2 .

It is not a de Polignac number, because 899885 - 2² = 899881 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899881) 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 11 ways as a sum of consecutive naturals, for example, 1592 + ... + 2081.

It is an arithmetic number, because the mean of its divisors is an integer number (104709).

2⁸⁹⁹⁸⁸⁵ is an apocalyptic number.

It is an amenable number.

899885 is a deficient number, since it is larger than the sum of its proper divisors (356623).

899885 is a wasteful number, since it uses less digits than its factorization.

899885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3692 (or 3685 counting only the distinct ones).

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

The square root of 899885 is about 948.6226857924. The cubic root of 899885 is about 96.5448260158.

The spelling of 899885 in words is "eight hundred ninety-nine thousand, eight hundred eighty-five".