223442239 has 2 divisors, whose sum is σ = 223442240. Its totient is φ = 223442238.

The previous prime is 223442213. The next prime is 223442273. The reversal of 223442239 is 932244322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 223442239 - 2⁷ = 223442111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 223442239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223442279) 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, 111721119 + 111721120.

It is an arithmetic number, because the mean of its divisors is an integer number (111721120).

Almost surely, 2^223442239 is an apocalyptic number.

223442239 is a deficient number, since it is larger than the sum of its proper divisors (1).

223442239 is an equidigital number, since it uses as much as digits as its factorization.

223442239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 31.

The square root of 223442239 is about 14947.9844460717. The cubic root of 223442239 is about 606.8133007396.

The spelling of 223442239 in words is "two hundred twenty-three million, four hundred forty-two thousand, two hundred thirty-nine".