442444 has 12 divisors (see below), whose sum is σ = 789264. Its totient is φ = 216944.

The previous prime is 442439. The next prime is 442447. The reversal of 442444 is 444244.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (442447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 832 + ... + 1255.

It is an arithmetic number, because the mean of its divisors is an integer number (65772).

2⁴⁴²⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

442444 is a deficient number, since it is larger than the sum of its proper divisors (346820).

442444 is a wasteful number, since it uses less digits than its factorization.

442444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2144 (or 2142 counting only the distinct ones).

The product of its digits is 2048, while the sum is 22.

The square root of 442444 is about 665.1646412731. The cubic root of 442444 is about 76.1996137602.

Adding to 442444 its reverse (444244), we get a palindrome (886688).

The spelling of 442444 in words is "four hundred forty-two thousand, four hundred forty-four", and thus it is an iban number.