444431313221 has 8 divisors (see below), whose sum is σ = 508444599744. Its totient is φ = 380548801440.

The previous prime is 444431313217. The next prime is 444431313239. The reversal of 444431313221 is 122313134444.

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 444431313221 - 2² = 444431313217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444431315221) 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, 32686400 + ... + 32699993.

It is an arithmetic number, because the mean of its divisors is an integer number (63555574968).

Almost surely, 2^444431313221 is an apocalyptic number.

It is an amenable number.

444431313221 is a deficient number, since it is larger than the sum of its proper divisors (64013286523).

444431313221 is an equidigital number, since it uses as much as digits as its factorization.

444431313221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65387371.

The product of its digits is 27648, while the sum is 32.

Adding to 444431313221 its reverse (122313134444), we get a palindrome (566744447665).

The spelling of 444431313221 in words is "four hundred forty-four billion, four hundred thirty-one million, three hundred thirteen thousand, two hundred twenty-one".