989385 has 16 divisors (see below), whose sum is σ = 1607040. Its totient is φ = 519680.

The previous prime is 989381. The next prime is 989411. The reversal of 989385 is 583989.

989385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 989385 - 2² = 989381 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989381) 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, 601 + ... + 1529.

It is an arithmetic number, because the mean of its divisors is an integer number (100440).

2⁹⁸⁹³⁸⁵ is an apocalyptic number.

It is an amenable number.

989385 is a deficient number, since it is larger than the sum of its proper divisors (617655).

989385 is a wasteful number, since it uses less digits than its factorization.

989385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008.

The product of its digits is 77760, while the sum is 42.

The square root of 989385 is about 994.6783399672. The cubic root of 989385 is about 99.6449072505.

The spelling of 989385 in words is "nine hundred eighty-nine thousand, three hundred eighty-five".