443244421 has 8 divisors (see below), whose sum is σ = 447709464. Its totient is φ = 438789120.

The previous prime is 443244419. The next prime is 443244443. The reversal of 443244421 is 124442344.

It can be written as a sum of positive squares in 4 ways, for example, as 3880900 + 439363521 = 1970^2 + 20961^2 .

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 443244421 - 2¹ = 443244419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 443244421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (443244401) 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 7 ways as a sum of consecutive naturals, for example, 118045 + ... + 121741.

It is an arithmetic number, because the mean of its divisors is an integer number (55963683).

Almost surely, 2^443244421 is an apocalyptic number.

It is an amenable number.

443244421 is a deficient number, since it is larger than the sum of its proper divisors (4465043).

443244421 is a wasteful number, since it uses less digits than its factorization.

443244421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4871.

The product of its digits is 12288, while the sum is 28.

The square root of 443244421 is about 21053.3707752464. The cubic root of 443244421 is about 762.4553673060.

Adding to 443244421 its reverse (124442344), we get a palindrome (567686765).

The spelling of 443244421 in words is "four hundred forty-three million, two hundred forty-four thousand, four hundred twenty-one".