444439 has 4 divisors (see below), whose sum is σ = 446656. Its totient is φ = 442224.

The previous prime is 444421. The next prime is 444443. The reversal of 444439 is 934444.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444439 is a prime.

It is a Duffinian number.

444439 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444449) 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, 774 + ... + 1219.

It is an arithmetic number, because the mean of its divisors is an integer number (111664).

2⁴⁴⁴⁴³⁹ is an apocalyptic number.

444439 is a deficient number, since it is larger than the sum of its proper divisors (2217).

444439 is a wasteful number, since it uses less digits than its factorization.

444439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2216.

The product of its digits is 6912, while the sum is 28.

The square root of 444439 is about 666.6625833208. The cubic root of 444439 is about 76.3139712190.

The spelling of 444439 in words is "four hundred forty-four thousand, four hundred thirty-nine".