444021443 has 4 divisors (see below), whose sum is σ = 445107480. Its totient is φ = 442935408.

The previous prime is 444021377. The next prime is 444021467. The reversal of 444021443 is 344120444.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 444021443 - 2¹⁶ = 443955907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444021143) 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, 542405 + ... + 543222.

It is an arithmetic number, because the mean of its divisors is an integer number (111276870).

Almost surely, 2^444021443 is an apocalyptic number.

444021443 is a deficient number, since it is larger than the sum of its proper divisors (1086037).

444021443 is a wasteful number, since it uses less digits than its factorization.

444021443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086036.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 444021443 is about 21071.8163194348. The cubic root of 444021443 is about 762.9006436302.

Adding to 444021443 its reverse (344120444), we get a palindrome (788141887).

Subtracting from 444021443 its reverse (344120444), we obtain a palindrome (99900999).

The spelling of 444021443 in words is "four hundred forty-four million, twenty-one thousand, four hundred forty-three".