244444566689 has 2 divisors, whose sum is σ = 244444566690. Its totient is φ = 244444566688.

The previous prime is 244444566683. The next prime is 244444566713. The reversal of 244444566689 is 986665444442.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241262704225 + 3181862464 = 491185^2 + 56408^2 .

It is a cyclic number.

It is not a de Polignac number, because 244444566689 - 2⁴ = 244444566673 is a prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (244444566683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122222283344 + 122222283345.

It is an arithmetic number, because the mean of its divisors is an integer number (122222283345).

Almost surely, 2^244444566689 is an apocalyptic number.

It is an amenable number.

244444566689 is a deficient number, since it is larger than the sum of its proper divisors (1).

244444566689 is an equidigital number, since it uses as much as digits as its factorization.

244444566689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 159252480, while the sum is 62.

The spelling of 244444566689 in words is "two hundred forty-four billion, four hundred forty-four million, five hundred sixty-six thousand, six hundred eighty-nine".