223879 has 4 divisors (see below), whose sum is σ = 225720. Its totient is φ = 222040.

The previous prime is 223849. The next prime is 223903. The reversal of 223879 is 978322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 978322 = 2 ⋅489161.

It is a cyclic number.

It is not a de Polignac number, because 223879 - 2⁹ = 223367 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 223879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223829) 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, 724 + ... + 985.

It is an arithmetic number, because the mean of its divisors is an integer number (56430).

2²²³⁸⁷⁹ is an apocalyptic number.

223879 is a deficient number, since it is larger than the sum of its proper divisors (1841).

223879 is a wasteful number, since it uses less digits than its factorization.

223879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840.

The product of its digits is 6048, while the sum is 31.

The square root of 223879 is about 473.1585357996. The cubic root of 223879 is about 60.7208421326.

The spelling of 223879 in words is "two hundred twenty-three thousand, eight hundred seventy-nine".