289089 has 20 divisors (see below), whose sum is σ = 447216. Its totient is φ = 185976.

The previous prime is 289067. The next prime is 289099. The reversal of 289089 is 980982.

It is not a de Polignac number, because 289089 - 2⁸ = 288833 is a prime.

289089 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (289019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3442 + ... + 3524.

2²⁸⁹⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

289089 is a deficient number, since it is larger than the sum of its proper divisors (158127).

289089 is an equidigital number, since it uses as much as digits as its factorization.

289089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 289089 is about 537.6699731248. The cubic root of 289089 is about 66.1216763683.

The spelling of 289089 in words is "two hundred eighty-nine thousand, eighty-nine".