444432121321 has 8 divisors (see below), whose sum is σ = 452014061760. Its totient is φ = 436851820752.

The previous prime is 444432121313. The next prime is 444432121361. The reversal of 444432121321 is 123121234444.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 444432121321 - 2³ = 444432121313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444432121361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142996 + ... + 953578.

It is an arithmetic number, because the mean of its divisors is an integer number (56501757720).

Almost surely, 2^444432121321 is an apocalyptic number.

It is an amenable number.

444432121321 is a deficient number, since it is larger than the sum of its proper divisors (7581940439).

444432121321 is an equidigital number, since it uses as much as digits as its factorization.

444432121321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819935.

The product of its digits is 18432, while the sum is 31.

Adding to 444432121321 its reverse (123121234444), we get a palindrome (567553355765).

The spelling of 444432121321 in words is "four hundred forty-four billion, four hundred thirty-two million, one hundred twenty-one thousand, three hundred twenty-one".