289444 has 9 divisors (see below), whose sum is σ = 508417. Its totient is φ = 144184.

The previous prime is 289439. The next prime is 289453. The reversal of 289444 is 444982.

The square root of 289444 is 538.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 19044 + 270400 = 138^2 + 520^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 942 + ... + 1210.

2²⁸⁹⁴⁴⁴ is an apocalyptic number.

289444 is the 538-th square number.

It is an amenable number.

289444 is a deficient number, since it is larger than the sum of its proper divisors (218973).

289444 is an equidigital number, since it uses as much as digits as its factorization.

289444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 271 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The cubic root of 289444 is about 66.1487310047.

Multiplying 289444 by its product of digits (9216), we get a square (2667515904 = 51648²).

The spelling of 289444 in words is "two hundred eighty-nine thousand, four hundred forty-four".