2144444389 has 2 divisors, whose sum is σ = 2144444390. Its totient is φ = 2144444388.

The previous prime is 2144444387. The next prime is 2144444431. The reversal of 2144444389 is 9834444412.

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., 1173062500 + 971381889 = 34250^2 + 31167^2 .

It is a cyclic number.

It is not a de Polignac number, because 2144444389 - 2¹ = 2144444387 is a prime.

Together with 2144444387, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2144444387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072222194 + 1072222195.

It is an arithmetic number, because the mean of its divisors is an integer number (1072222195).

Almost surely, 2^2144444389 is an apocalyptic number.

It is an amenable number.

2144444389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2144444389 is an equidigital number, since it uses as much as digits as its factorization.

2144444389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 442368, while the sum is 43.

The square root of 2144444389 is about 46308.1460328526. The cubic root of 2144444389 is about 1289.5502285944.

The spelling of 2144444389 in words is "two billion, one hundred forty-four million, four hundred forty-four thousand, three hundred eighty-nine".