444333121 has 4 divisors (see below), whose sum is σ = 445083012. Its totient is φ = 443583232.

The previous prime is 444333091. The next prime is 444333151. The reversal of 444333121 is 121333444.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (444333091) and next prime (444333151).

It can be written as a sum of positive squares in 2 ways, for example, as 135839025 + 308494096 = 11655^2 + 17564^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444333121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444333151) 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 3 ways as a sum of consecutive naturals, for example, 374056 + ... + 375241.

It is an arithmetic number, because the mean of its divisors is an integer number (111270753).

Almost surely, 2^444333121 is an apocalyptic number.

It is an amenable number.

444333121 is a deficient number, since it is larger than the sum of its proper divisors (749891).

444333121 is an equidigital number, since it uses as much as digits as its factorization.

444333121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749890.

The product of its digits is 3456, while the sum is 25.

The square root of 444333121 is about 21079.2106351258. The cubic root of 444333121 is about 763.0791062821.

Adding to 444333121 its reverse (121333444), we get a palindrome (565666565).

The spelling of 444333121 in words is "four hundred forty-four million, three hundred thirty-three thousand, one hundred twenty-one".