985589 has 4 divisors (see below), whose sum is σ = 1075200. Its totient is φ = 895980.

The previous prime is 985571. The next prime is 985597.

985589 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 985589 - 2¹² = 981493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44789 + ... + 44810.

It is an arithmetic number, because the mean of its divisors is an integer number (268800).

2⁹⁸⁵⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

985589 is a deficient number, since it is larger than the sum of its proper divisors (89611).

985589 is a wasteful number, since it uses less digits than its factorization.

985589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89610.

The product of its digits is 129600, while the sum is 44.

The square root of 985589 is about 992.7683516309. The cubic root of 985589 is about 99.5173071583.

The spelling of 985589 in words is "nine hundred eighty-five thousand, five hundred eighty-nine".