6441889 has 2 divisors, whose sum is σ = 6441890. Its totient is φ = 6441888.

The previous prime is 6441887. The next prime is 6441899. The reversal of 6441889 is 9881446.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5475600 + 966289 = 2340^2 + 983^2 .

It is a cyclic number.

It is not a de Polignac number, because 6441889 - 2¹ = 6441887 is a prime.

Together with 6441887, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6441887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3220944 + 3220945.

It is an arithmetic number, because the mean of its divisors is an integer number (3220945).

Almost surely, 2^6441889 is an apocalyptic number.

It is an amenable number.

6441889 is a deficient number, since it is larger than the sum of its proper divisors (1).

6441889 is an equidigital number, since it uses as much as digits as its factorization.

6441889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 40.

The square root of 6441889 is about 2538.0876659406. The cubic root of 6441889 is about 186.0677384602.

The spelling of 6441889 in words is "six million, four hundred forty-one thousand, eight hundred eighty-nine".