289223 has 4 divisors (see below), whose sum is σ = 315528. Its totient is φ = 262920.

The previous prime is 289213. The next prime is 289241. The reversal of 289223 is 322982.

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

It is a cyclic number.

It is not a de Polignac number, because 289223 - 2¹⁰ = 288199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 289192 and 289201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13136 + ... + 13157.

It is an arithmetic number, because the mean of its divisors is an integer number (78882).

2²⁸⁹²²³ is an apocalyptic number.

289223 is a deficient number, since it is larger than the sum of its proper divisors (26305).

289223 is a wasteful number, since it uses less digits than its factorization.

289223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26304.

The product of its digits is 1728, while the sum is 26.

The square root of 289223 is about 537.7945704449. The cubic root of 289223 is about 66.1318911418.

It can be divided in two parts, 289 and 223, that added together give a 9-th power (512 = 2⁹).

The spelling of 289223 in words is "two hundred eighty-nine thousand, two hundred twenty-three".