243044441 has 2 divisors, whose sum is σ = 243044442. Its totient is φ = 243044440.

The previous prime is 243044429. The next prime is 243044449. The reversal of 243044441 is 144440342.

It is a happy number.

243044441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 235776025 + 7268416 = 15355^2 + 2696^2 .

It is a cyclic number.

It is not a de Polignac number, because 243044441 - 2⁶ = 243044377 is a prime.

It is a Chen prime.

It is equal to p_13319162 and since 243044441 and 13319162 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243044441.

It is not a weakly prime, because it can be changed into another prime (243044449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121522220 + 121522221.

It is an arithmetic number, because the mean of its divisors is an integer number (121522221).

Almost surely, 2^243044441 is an apocalyptic number.

It is an amenable number.

243044441 is a deficient number, since it is larger than the sum of its proper divisors (1).

243044441 is an equidigital number, since it uses as much as digits as its factorization.

243044441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 243044441 is about 15589.8826486924. The cubic root of 243044441 is about 624.0631861627.

Adding to 243044441 its reverse (144440342), we get a palindrome (387484783).

The spelling of 243044441 in words is "two hundred forty-three million, forty-four thousand, four hundred forty-one".