444865 has 8 divisors (see below), whose sum is σ = 537768. Its totient is φ = 353280.

The previous prime is 444863. The next prime is 444869. The reversal of 444865 is 568444.

It can be written as a sum of positive squares in 4 ways, for example, as 3969 + 440896 = 63^2 + 664^2 .

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

It is not a de Polignac number, because 444865 - 2¹ = 444863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444863) 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, 735 + ... + 1195.

It is an arithmetic number, because the mean of its divisors is an integer number (67221).

2⁴⁴⁴⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

444865 is a deficient number, since it is larger than the sum of its proper divisors (92903).

444865 is a wasteful number, since it uses less digits than its factorization.

444865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659.

The product of its digits is 15360, while the sum is 31.

The square root of 444865 is about 666.9820087529. The cubic root of 444865 is about 76.3383460453.

The spelling of 444865 in words is "four hundred forty-four thousand, eight hundred sixty-five".