444405 has 32 divisors (see below), whose sum is σ = 798336. Its totient is φ = 209664.

The previous prime is 444403. The next prime is 444421. The reversal of 444405 is 504444.

It is not a de Polignac number, because 444405 - 2¹ = 444403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8359 + ... + 8411.

It is an arithmetic number, because the mean of its divisors is an integer number (24948).

2⁴⁴⁴⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

444405 is a deficient number, since it is larger than the sum of its proper divisors (353931).

444405 is a wasteful number, since it uses less digits than its factorization.

444405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117.

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 444405 is about 666.6370826769. The cubic root of 444405 is about 76.3120251392.

Adding to 444405 its reverse (504444), we get a palindrome (948849).

The spelling of 444405 in words is "four hundred forty-four thousand, four hundred five".