289088 has 14 divisors (see below), whose sum is σ = 573786. Its totient is φ = 144512.

The previous prime is 289067. The next prime is 289099. The reversal of 289088 is 880982.

It can be written as a sum of positive squares in only one way, i.e., 153664 + 135424 = 392^2 + 368^2 .

It is a zygodrome in base 3.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 289088.

It is an unprimeable number.

289088 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2195 + ... + 2322.

2²⁸⁹⁰⁸⁸ is an apocalyptic number.

It is an amenable number.

289088 is a deficient number, since it is larger than the sum of its proper divisors (284698).

289088 is an equidigital number, since it uses as much as digits as its factorization.

289088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4529 (or 4519 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 289088 is about 537.6690431855. The cubic root of 289088 is about 66.1216001268.

The spelling of 289088 in words is "two hundred eighty-nine thousand, eighty-eight".