445543444 has 6 divisors (see below), whose sum is σ = 779701034. Its totient is φ = 222771720.

The previous prime is 445543393. The next prime is 445543447. The reversal of 445543444 is 444345544.

It can be written as a sum of positive squares in only one way, i.e., 396010000 + 49533444 = 19900^2 + 7038^2 .

It is a super-3 number, since 3×445543444³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445543447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55692927 + ... + 55692934.

Almost surely, 2^445543444 is an apocalyptic number.

It is an amenable number.

445543444 is a deficient number, since it is larger than the sum of its proper divisors (334157590).

445543444 is a wasteful number, since it uses less digits than its factorization.

445543444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111385865 (or 111385863 counting only the distinct ones).

The product of its digits is 307200, while the sum is 37.

The square root of 445543444 is about 21107.9000376636. The cubic root of 445543444 is about 763.7713308322.

Adding to 445543444 its reverse (444345544), we get a palindrome (889888988).

The spelling of 445543444 in words is "four hundred forty-five million, five hundred forty-three thousand, four hundred forty-four".