6444023 has 4 divisors (see below), whose sum is σ = 6593928. Its totient is φ = 6294120.

The previous prime is 6444019. The next prime is 6444041. The reversal of 6444023 is 3204446.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6444023 - 2² = 6444019 is a prime.

It is a d-powerful number, because it can be written as 6² + 4⁸ + 4⁸ + 4¹¹ + 0 + 2¹⁹ + 3¹³ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6444023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6444043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74888 + ... + 74973.

It is an arithmetic number, because the mean of its divisors is an integer number (1648482).

Almost surely, 2^6444023 is an apocalyptic number.

6444023 is a deficient number, since it is larger than the sum of its proper divisors (149905).

6444023 is a wasteful number, since it uses less digits than its factorization.

6444023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149904.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 6444023 is about 2538.5080263809. The cubic root of 6444023 is about 186.0882823678.

Adding to 6444023 its reverse (3204446), we get a palindrome (9648469).

The spelling of 6444023 in words is "six million, four hundred forty-four thousand, twenty-three".