899689 has 16 divisors (see below), whose sum is σ = 1091200. Its totient is φ = 740880.

The previous prime is 899687. The next prime is 899693. The reversal of 899689 is 986998.

It is not a de Polignac number, because 899689 - 2¹ = 899687 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

899689 is a lucky number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (899681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14719 + ... + 14779.

It is an arithmetic number, because the mean of its divisors is an integer number (68200).

2⁸⁹⁹⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

899689 is a deficient number, since it is larger than the sum of its proper divisors (191511).

899689 is an equidigital number, since it uses as much as digits as its factorization.

899689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 111 counting only the distinct ones).

The product of its digits is 279936, while the sum is 49.

The square root of 899689 is about 948.5193724959. The cubic root of 899689 is about 96.5378161720.

The spelling of 899689 in words is "eight hundred ninety-nine thousand, six hundred eighty-nine".