985089 has 16 divisors (see below), whose sum is σ = 1527680. Its totient is φ = 552960.

The previous prime is 985079. The next prime is 985097. The reversal of 985089 is 980589.

It is not a de Polignac number, because 985089 - 2⁵ = 985057 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 985089.

It is not an unprimeable number, because it can be changed into a prime (985079) 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, 897 + ... + 1665.

It is an arithmetic number, because the mean of its divisors is an integer number (95480).

It is a Proth number, since it is equal to 481 ⋅ 2¹¹ + 1 and 481 < 2¹¹.

2⁹⁸⁵⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

985089 is a deficient number, since it is larger than the sum of its proper divisors (542591).

985089 is a wasteful number, since it uses less digits than its factorization.

985089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840.

The product of its (nonzero) digits is 25920, while the sum is 39.

The square root of 985089 is about 992.5164986034. The cubic root of 985089 is about 99.5004755749.

The spelling of 985089 in words is "nine hundred eighty-five thousand, eighty-nine".