6444423 has 12 divisors (see below), whose sum is σ = 9364680. Its totient is φ = 4270416.

The previous prime is 6444413. The next prime is 6444437. The reversal of 6444423 is 3244446.

It is not a de Polignac number, because 6444423 - 2⁵ = 6444391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6444413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 513 + ... + 3626.

It is an arithmetic number, because the mean of its divisors is an integer number (780390).

Almost surely, 2^6444423 is an apocalyptic number.

6444423 is a deficient number, since it is larger than the sum of its proper divisors (2920257).

6444423 is a wasteful number, since it uses less digits than its factorization.

6444423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4318 (or 4315 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 6444423 is about 2538.5868115942. The cubic root of 6444423 is about 186.0921326423.

Adding to 6444423 its reverse (3244446), we get a palindrome (9688869).

The spelling of 6444423 in words is "six million, four hundred forty-four thousand, four hundred twenty-three".