289265 has 4 divisors (see below), whose sum is σ = 347124. Its totient is φ = 231408.

The previous prime is 289253. The next prime is 289273. The reversal of 289265 is 562982.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65536 + 223729 = 256^2 + 473^2 .

It is a cyclic number.

It is not a de Polignac number, because 289265 - 2⁴ = 289249 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28922 + ... + 28931.

It is an arithmetic number, because the mean of its divisors is an integer number (86781).

2²⁸⁹²⁶⁵ is an apocalyptic number.

It is an amenable number.

289265 is a deficient number, since it is larger than the sum of its proper divisors (57859).

289265 is an equidigital number, since it uses as much as digits as its factorization.

289265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57858.

The product of its digits is 8640, while the sum is 32.

The square root of 289265 is about 537.8336173948. The cubic root of 289265 is about 66.1350921378.

The spelling of 289265 in words is "two hundred eighty-nine thousand, two hundred sixty-five".