989585 has 8 divisors (see below), whose sum is σ = 1213056. Its totient is φ = 774640.

The previous prime is 989581. The next prime is 989623. The reversal of 989585 is 585989.

989585 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 989585 - 2² = 989581 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 989585.

It is not an unprimeable number, because it can be changed into a prime (989581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1871 + ... + 2340.

It is an arithmetic number, because the mean of its divisors is an integer number (151632).

2⁹⁸⁹⁵⁸⁵ is an apocalyptic number.

It is an amenable number.

989585 is a deficient number, since it is larger than the sum of its proper divisors (223471).

989585 is a wasteful number, since it uses less digits than its factorization.

989585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4263.

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

The square root of 989585 is about 994.7788699002. The cubic root of 989585 is about 99.6516210639.

The spelling of 989585 in words is "nine hundred eighty-nine thousand, five hundred eighty-five".