223427189 has 2 divisors, whose sum is σ = 223427190. Its totient is φ = 223427188.

The previous prime is 223427177. The next prime is 223427227. The reversal of 223427189 is 981724322.

It is an a-pointer prime, because the next prime (223427227) can be obtained adding 223427189 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214124689 + 9302500 = 14633^2 + 3050^2 .

It is a cyclic number.

It is not a de Polignac number, because 223427189 - 2⁴ = 223427173 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223427389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111713594 + 111713595.

It is an arithmetic number, because the mean of its divisors is an integer number (111713595).

Almost surely, 2^223427189 is an apocalyptic number.

It is an amenable number.

223427189 is a deficient number, since it is larger than the sum of its proper divisors (1).

223427189 is an equidigital number, since it uses as much as digits as its factorization.

223427189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 223427189 is about 14947.4810252430. The cubic root of 223427189 is about 606.7996764203.

The spelling of 223427189 in words is "two hundred twenty-three million, four hundred twenty-seven thousand, one hundred eighty-nine".