4440423 has 16 divisors (see below), whose sum is σ = 6533856. Its totient is φ = 2664960.

The previous prime is 4440421. The next prime is 4440427. The reversal of 4440423 is 3240444.

It is not a de Polignac number, because 4440423 - 2¹ = 4440421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4440423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4440421) 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 15 ways as a sum of consecutive naturals, for example, 211 + ... + 2987.

It is an arithmetic number, because the mean of its divisors is an integer number (408366).

Almost surely, 2^4440423 is an apocalyptic number.

4440423 is a deficient number, since it is larger than the sum of its proper divisors (2093433).

4440423 is a wasteful number, since it uses less digits than its factorization.

4440423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2834.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 4440423 is about 2107.2311216381. The cubic root of 4440423 is about 164.3645346506.

Adding to 4440423 its sum of digits (21), we get a palindrome (4440444).

Adding to 4440423 its reverse (3240444), we get a palindrome (7680867).

The spelling of 4440423 in words is "four million, four hundred forty thousand, four hundred twenty-three".