Homonym: 289 (Square)
The number 289 is a three-digit integer that follows 288 and precedes 290. It is an odd number and can be expressed as the square of 17, since 17 \times 17 = 289. This makes it a perfect square, which is a number that can be expressed as the product of an integer multiplied by itself.
In mathematics, 289 is also classified as a composite number because it has divisors other than 1 and itself. Its divisors include 1, 17, and 289. Additionally, in the context of number theory, perfect squares like 289 are often studied for their unique properties and relationships with other numbers.