223859 has 4 divisors (see below), whose sum is σ = 233616. Its totient is φ = 214104.

The previous prime is 223849. The next prime is 223903. The reversal of 223859 is 958322.

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

It is a cyclic number.

It is not a de Polignac number, because 223859 - 2⁴ = 223843 is a prime.

It is a super-2 number, since 2×223859² = 100225703762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4844 + ... + 4889.

It is an arithmetic number, because the mean of its divisors is an integer number (58404).

2²²³⁸⁵⁹ is an apocalyptic number.

223859 is a deficient number, since it is larger than the sum of its proper divisors (9757).

223859 is an equidigital number, since it uses as much as digits as its factorization.

223859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9756.

The product of its digits is 4320, while the sum is 29.

The square root of 223859 is about 473.1374007622. The cubic root of 223859 is about 60.7190339341.

The spelling of 223859 in words is "two hundred twenty-three thousand, eight hundred fifty-nine".