444444224421 has 16 divisors (see below), whose sum is σ = 593064033408. Its totient is φ = 296060385600.

The previous prime is 444444224417. The next prime is 444444224449. The reversal of 444444224421 is 124422444444.

It is not a de Polignac number, because 444444224421 - 2² = 444444224417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 444444224421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444444224401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21854560 + ... + 21874886.

It is an arithmetic number, because the mean of its divisors is an integer number (37066502088).

Almost surely, 2^444444224421 is an apocalyptic number.

It is an amenable number.

444444224421 is a deficient number, since it is larger than the sum of its proper divisors (148619808987).

444444224421 is a wasteful number, since it uses less digits than its factorization.

444444224421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25772.

The product of its digits is 524288, while the sum is 39.

Adding to 444444224421 its reverse (124422444444), we get a palindrome (568866668865).

The spelling of 444444224421 in words is "four hundred forty-four billion, four hundred forty-four million, two hundred twenty-four thousand, four hundred twenty-one".