444189 has 4 divisors (see below), whose sum is σ = 592256. Its totient is φ = 296124.

The previous prime is 444187. The next prime is 444209. The reversal of 444189 is 981444.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 444189 - 2¹ = 444187 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444181) 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 3 ways as a sum of consecutive naturals, for example, 74029 + ... + 74034.

It is an arithmetic number, because the mean of its divisors is an integer number (148064).

2⁴⁴⁴¹⁸⁹ is an apocalyptic number.

It is an amenable number.

444189 is a deficient number, since it is larger than the sum of its proper divisors (148067).

444189 is a wasteful number, since it uses less digits than its factorization.

444189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148066.

The product of its digits is 4608, while the sum is 30.

The square root of 444189 is about 666.4750557973. The cubic root of 444189 is about 76.2996594903.

The spelling of 444189 in words is "four hundred forty-four thousand, one hundred eighty-nine".