222989 has 8 divisors (see below), whose sum is σ = 254520. Its totient is φ = 193536.

The previous prime is 222979. The next prime is 222991. The reversal of 222989 is 989222.

It can be written as a sum of positive squares in 4 ways, for example, as 13225 + 209764 = 115^2 + 458^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284 + ... + 725.

It is an arithmetic number, because the mean of its divisors is an integer number (31815).

2²²²⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

222989 is a deficient number, since it is larger than the sum of its proper divisors (31531).

222989 is a wasteful number, since it uses less digits than its factorization.

222989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039.

The product of its digits is 5184, while the sum is 32.

The square root of 222989 is about 472.2171110835. The cubic root of 222989 is about 60.6402728375.

The spelling of 222989 in words is "two hundred twenty-two thousand, nine hundred eighty-nine".