289222 has 4 divisors (see below), whose sum is σ = 433836. Its totient is φ = 144610.

The previous prime is 289213. The next prime is 289241. The reversal of 289222 is 222982.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222982 = 2 ⋅111491.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

289222 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, 72304 + ... + 72307.

It is an arithmetic number, because the mean of its divisors is an integer number (108459).

2²⁸⁹²²² is an apocalyptic number.

289222 is a deficient number, since it is larger than the sum of its proper divisors (144614).

289222 is a wasteful number, since it uses less digits than its factorization.

289222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144613.

The product of its digits is 1152, while the sum is 25.

The square root of 289222 is about 537.7936407210. The cubic root of 289222 is about 66.1318149239.

The spelling of 289222 in words is "two hundred eighty-nine thousand, two hundred twenty-two".