444020342321 has 8 divisors (see below), whose sum is σ = 445370530920. Its totient is φ = 442671651072.

The previous prime is 444020342309. The next prime is 444020342347. The reversal of 444020342321 is 123243020444.

It can be written as a sum of positive squares in 4 ways, for example, as 58255132321 + 385765210000 = 241361^2 + 621100^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444020342321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444020341321) 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, 221075 + ... + 967943.

It is an arithmetic number, because the mean of its divisors is an integer number (55671316365).

Almost surely, 2^444020342321 is an apocalyptic number.

It is an amenable number.

444020342321 is a deficient number, since it is larger than the sum of its proper divisors (1350188599).

444020342321 is a wasteful number, since it uses less digits than its factorization.

444020342321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748675.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 444020342321 its reverse (123243020444), we get a palindrome (567263362765).

The spelling of 444020342321 in words is "four hundred forty-four billion, twenty million, three hundred forty-two thousand, three hundred twenty-one".