444243221434 has 32 divisors (see below), whose sum is σ = 717640741440. Its totient is φ = 205478153472.

The previous prime is 444243221423. The next prime is 444243221453. The reversal of 444243221434 is 434122342444.

It is a junction number, because it is equal to n+sod(n) for n = 444243221393 and 444243221402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15176817 + ... + 15206059.

It is an arithmetic number, because the mean of its divisors is an integer number (22426273170).

Almost surely, 2^444243221434 is an apocalyptic number.

444243221434 is a deficient number, since it is larger than the sum of its proper divisors (273397520006).

444243221434 is a wasteful number, since it uses less digits than its factorization.

444243221434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36894.

The product of its digits is 294912, while the sum is 37.

Adding to 444243221434 its reverse (434122342444), we get a palindrome (878365563878).

The spelling of 444243221434 in words is "four hundred forty-four billion, two hundred forty-three million, two hundred twenty-one thousand, four hundred thirty-four".