444809 has 8 divisors (see below), whose sum is σ = 480480. Its totient is φ = 410400.

The previous prime is 444803. The next prime is 444811. The reversal of 444809 is 908444.

It is a happy number.

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

It is not a de Polignac number, because 444809 - 2⁴ = 444793 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (444803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494 + ... + 1064.

It is an arithmetic number, because the mean of its divisors is an integer number (60060).

2⁴⁴⁴⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

444809 is a deficient number, since it is larger than the sum of its proper divisors (35671).

444809 is a wasteful number, since it uses less digits than its factorization.

444809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 444809 is about 666.9400272888. The cubic root of 444809 is about 76.3351427313.

The spelling of 444809 in words is "four hundred forty-four thousand, eight hundred nine".