223440443 has 2 divisors, whose sum is σ = 223440444. Its totient is φ = 223440442.

The previous prime is 223440439. The next prime is 223440457. The reversal of 223440443 is 344044322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 223440443 - 2² = 223440439 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (223440403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111720221 + 111720222.

It is an arithmetic number, because the mean of its divisors is an integer number (111720222).

Almost surely, 2^223440443 is an apocalyptic number.

223440443 is a deficient number, since it is larger than the sum of its proper divisors (1).

223440443 is an equidigital number, since it uses as much as digits as its factorization.

223440443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 26.

The square root of 223440443 is about 14947.9243709620. The cubic root of 223440443 is about 606.8116749061.

Adding to 223440443 its reverse (344044322), we get a palindrome (567484765).

The spelling of 223440443 in words is "two hundred twenty-three million, four hundred forty thousand, four hundred forty-three".