442344223 has 2 divisors, whose sum is σ = 442344224. Its totient is φ = 442344222.

The previous prime is 442344193. The next prime is 442344229. The reversal of 442344223 is 322443244.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 442344223 - 2⁵ = 442344191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 442344191 and 442344200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442344229) 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, 221172111 + 221172112.

It is an arithmetic number, because the mean of its divisors is an integer number (221172112).

Almost surely, 2^442344223 is an apocalyptic number.

442344223 is a deficient number, since it is larger than the sum of its proper divisors (1).

442344223 is an equidigital number, since it uses as much as digits as its factorization.

442344223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 28.

The square root of 442344223 is about 21031.9809575798. The cubic root of 442344223 is about 761.9388532119.

Adding to 442344223 its reverse (322443244), we get a palindrome (764787467).

The spelling of 442344223 in words is "four hundred forty-two million, three hundred forty-four thousand, two hundred twenty-three".