445443321 has 16 divisors (see below), whose sum is σ = 615073536. Its totient is φ = 286554576.

The previous prime is 445443293. The next prime is 445443331. The reversal of 445443321 is 123344544.

It is not a de Polignac number, because 445443321 - 2¹¹ = 445441273 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (445443331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10095 + ... + 31508.

It is an arithmetic number, because the mean of its divisors is an integer number (38442096).

Almost surely, 2^445443321 is an apocalyptic number.

It is an amenable number.

445443321 is a deficient number, since it is larger than the sum of its proper divisors (169630215).

445443321 is a wasteful number, since it uses less digits than its factorization.

445443321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41732.

The product of its digits is 23040, while the sum is 30.

The square root of 445443321 is about 21105.5282094526. The cubic root of 445443321 is about 763.7141147088.

Adding to 445443321 its reverse (123344544), we get a palindrome (568787865).

The spelling of 445443321 in words is "four hundred forty-five million, four hundred forty-three thousand, three hundred twenty-one".