223439 has 2 divisors, whose sum is σ = 223440. Its totient is φ = 223438.

The previous prime is 223429. The next prime is 223441. The reversal of 223439 is 934322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 223439 - 2⁴ = 223423 is a prime.

Together with 223441, it forms a pair of twin primes.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2¹⁵ + 2¹⁷ + 4³ + 3⁵ + 3⁵ + 9⁵ .

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223429) 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 as a sum of consecutive naturals, namely, 111719 + 111720.

It is an arithmetic number, because the mean of its divisors is an integer number (111720).

2²²³⁴³⁹ is an apocalyptic number.

223439 is a deficient number, since it is larger than the sum of its proper divisors (1).

223439 is an equidigital number, since it uses as much as digits as its factorization.

223439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 23.

The square root of 223439 is about 472.6933466847. The cubic root of 223439 is about 60.6810368620.

The spelling of 223439 in words is "two hundred twenty-three thousand, four hundred thirty-nine".