444309 has 8 divisors (see below), whose sum is σ = 612960. Its totient is φ = 285936.

The previous prime is 444307. The next prime is 444341. The reversal of 444309 is 903444.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 444309 - 2¹ = 444307 is a prime.

444309 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444307) 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 7 ways as a sum of consecutive naturals, for example, 2467 + ... + 2640.

It is an arithmetic number, because the mean of its divisors is an integer number (76620).

2⁴⁴⁴³⁰⁹ is an apocalyptic number.

It is an amenable number.

444309 is a deficient number, since it is larger than the sum of its proper divisors (168651).

444309 is a wasteful number, since it uses less digits than its factorization.

444309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5139.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 444309 is about 666.5650755928. The cubic root of 444309 is about 76.3065297900.

The spelling of 444309 in words is "four hundred forty-four thousand, three hundred nine".