442044224 has 14 divisors (see below), whose sum is σ = 877181634. Its totient is φ = 221022080.

The previous prime is 442044223. The next prime is 442044227. The reversal of 442044224 is 422440244.

It can be written as a sum of positive squares in only one way, i.e., 403206400 + 38837824 = 20080^2 + 6232^2 .

It is a junction number, because it is equal to n+sod(n) for n = 442044193 and 442044202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442044223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3453407 + ... + 3453534.

It is an arithmetic number, because the mean of its divisors is an integer number (62655831).

Almost surely, 2^442044224 is an apocalyptic number.

It is an amenable number.

442044224 is a deficient number, since it is larger than the sum of its proper divisors (435137410).

442044224 is an equidigital number, since it uses as much as digits as its factorization.

442044224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6906953 (or 6906943 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

The square root of 442044224 is about 21024.8477759055. The cubic root of 442044224 is about 761.7665646213.

Adding to 442044224 its reverse (422440244), we get a palindrome (864484468).

The spelling of 442044224 in words is "four hundred forty-two million, forty-four thousand, two hundred twenty-four".