222879 has 4 divisors (see below), whose sum is σ = 297176. Its totient is φ = 148584.

The previous prime is 222877. The next prime is 222883. The reversal of 222879 is 978222.

222879 is nontrivially palindromic in base 13.

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

It is not a de Polignac number, because 222879 - 2¹ = 222877 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222877) 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, 37144 + ... + 37149.

It is an arithmetic number, because the mean of its divisors is an integer number (74294).

2²²²⁸⁷⁹ is an apocalyptic number.

222879 is a deficient number, since it is larger than the sum of its proper divisors (74297).

222879 is an equidigital number, since it uses as much as digits as its factorization.

222879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74296.

The product of its digits is 4032, while the sum is 30.

The square root of 222879 is about 472.1006248672. The cubic root of 222879 is about 60.6302999582.

The spelling of 222879 in words is "two hundred twenty-two thousand, eight hundred seventy-nine".