9444459897841 has 2 divisors, whose sum is σ = 9444459897842. Its totient is φ = 9444459897840.

The previous prime is 9444459897827. The next prime is 9444459897907. The reversal of 9444459897841 is 1487989544449.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6735473087841 + 2708986810000 = 2595279^2 + 1645900^2 .

It is an emirp because it is prime and its reverse (1487989544449) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9444459897841 - 2⁹ = 9444459897329 is a prime.

It is a super-2 number, since 2×9444459897841² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9444459897641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4722229948920 + 4722229948921.

It is an arithmetic number, because the mean of its divisors is an integer number (4722229948921).

Almost surely, 2^{9444459897841} is an apocalyptic number.

It is an amenable number.

9444459897841 is a deficient number, since it is larger than the sum of its proper divisors (1).

9444459897841 is an equidigital number, since it uses as much as digits as its factorization.

9444459897841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1672151040, while the sum is 76.

The spelling of 9444459897841 in words is "nine trillion, four hundred forty-four billion, four hundred fifty-nine million, eight hundred ninety-seven thousand, eight hundred forty-one".