443365544449 has 3 divisors (see below), whose sum is σ = 443366210307. Its totient is φ = 443364878592.

The previous prime is 443365544441. The next prime is 443365544467. The reversal of 443365544449 is 944445563344.

The square root of 443365544449 is 665857.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 443362881025 + 2663424 = 665855^2 + 1632^2 .

It is not a de Polignac number, because 443365544449 - 2³ = 443365544441 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 443365544449.

It is not an unprimeable number, because it can be changed into a prime (443365544441) 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 2 ways as a sum of consecutive naturals, for example, 332929 + ... + 998785.

It is an arithmetic number, because the mean of its divisors is an integer number (147788736769).

Almost surely, 2^443365544449 is an apocalyptic number.

443365544449 is the 665857-th square number.

443365544449 is the 332929-th centered octagonal number.

It is an amenable number.

443365544449 is a deficient number, since it is larger than the sum of its proper divisors (665858).

443365544449 is an frugal number, since it uses more digits than its factorization.

443365544449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331714 (or 665857 counting only the distinct ones).

The product of its digits is 49766400, while the sum is 55.

The spelling of 443365544449 in words is "four hundred forty-three billion, three hundred sixty-five million, five hundred forty-four thousand, four hundred forty-nine".