223444189 has 2 divisors, whose sum is σ = 223444190. Its totient is φ = 223444188.

The previous prime is 223444121. The next prime is 223444229. The reversal of 223444189 is 981444322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131859289 + 91584900 = 11483^2 + 9570^2 .

It is a cyclic number.

It is not a de Polignac number, because 223444189 - 2⁷ = 223444061 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223444489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111722094 + 111722095.

It is an arithmetic number, because the mean of its divisors is an integer number (111722095).

Almost surely, 2^223444189 is an apocalyptic number.

It is an amenable number.

223444189 is a deficient number, since it is larger than the sum of its proper divisors (1).

223444189 is an equidigital number, since it uses as much as digits as its factorization.

223444189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 37.

The square root of 223444189 is about 14948.0496721144. The cubic root of 223444189 is about 606.8150659721.

The spelling of 223444189 in words is "two hundred twenty-three million, four hundred forty-four thousand, one hundred eighty-nine".