444218 has 4 divisors (see below), whose sum is σ = 666330. Its totient is φ = 222108.

The previous prime is 444209. The next prime is 444253. The reversal of 444218 is 812444.

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

It can be written as a sum of positive squares in only one way, i.e., 339889 + 104329 = 583^2 + 323^2 .

It is a junction number, because it is equal to n+sod(n) for n = 444193 and 444202.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 111053 + ... + 111056.

2⁴⁴⁴²¹⁸ is an apocalyptic number.

444218 is a deficient number, since it is larger than the sum of its proper divisors (222112).

444218 is a wasteful number, since it uses less digits than its factorization.

444218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222111.

The product of its digits is 1024, while the sum is 23.

The square root of 444218 is about 666.4968116953. The cubic root of 444218 is about 76.3013199261.

The spelling of 444218 in words is "four hundred forty-four thousand, two hundred eighteen".