2144489 has 2 divisors, whose sum is σ = 2144490. Its totient is φ = 2144488.

The previous prime is 2144479. The next prime is 2144491. The reversal of 2144489 is 9844412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2059225 + 85264 = 1435^2 + 292^2 .

It is a cyclic number.

It is not a de Polignac number, because 2144489 - 2¹² = 2140393 is a prime.

It is a super-2 number, since 2×2144489² = 9197666142242, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 2144491, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2144419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072244 + 1072245.

It is an arithmetic number, because the mean of its divisors is an integer number (1072245).

2^2144489 is an apocalyptic number.

It is an amenable number.

2144489 is a deficient number, since it is larger than the sum of its proper divisors (1).

2144489 is an equidigital number, since it uses as much as digits as its factorization.

2144489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 32.

The square root of 2144489 is about 1464.4073886730. The cubic root of 2144489 is about 128.9559170728.

The spelling of 2144489 in words is "two million, one hundred forty-four thousand, four hundred eighty-nine".