444019442 has 4 divisors (see below), whose sum is σ = 666029166. Its totient is φ = 222009720.

The previous prime is 444019441. The next prime is 444019453. The reversal of 444019442 is 244910444.

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., 252778201 + 191241241 = 15899^2 + 13829^2 .

It is a junction number, because it is equal to n+sod(n) for n = 444019399 and 444019408.

It is not an unprimeable number, because it can be changed into a prime (444019441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111004859 + ... + 111004862.

Almost surely, 2^444019442 is an apocalyptic number.

444019442 is a deficient number, since it is larger than the sum of its proper divisors (222009724).

444019442 is a wasteful number, since it uses less digits than its factorization.

444019442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222009723.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 444019442 is about 21071.7688388991. The cubic root of 444019442 is about 762.8994976146.

Adding to 444019442 its reverse (244910444), we get a palindrome (688929886).

The spelling of 444019442 in words is "four hundred forty-four million, nineteen thousand, four hundred forty-two".