223239 has 4 divisors (see below), whose sum is σ = 297656. Its totient is φ = 148824.

The previous prime is 223229. The next prime is 223241. The reversal of 223239 is 932322.

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

It is not a de Polignac number, because 223239 - 2⁵ = 223207 is a prime.

It is a super-3 number, since 3×223239³ = 33375782761802757, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a D-number.

It is a Duffinian number.

223239 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223219) 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, 37204 + ... + 37209.

It is an arithmetic number, because the mean of its divisors is an integer number (74414).

2²²³²³⁹ is an apocalyptic number.

223239 is a deficient number, since it is larger than the sum of its proper divisors (74417).

223239 is an equidigital number, since it uses as much as digits as its factorization.

223239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74416.

The product of its digits is 648, while the sum is 21.

The square root of 223239 is about 472.4817456791. The cubic root of 223239 is about 60.6629262812.

The spelling of 223239 in words is "two hundred twenty-three thousand, two hundred thirty-nine".