43422444 has 144 divisors (see below), whose sum is σ = 126706944. Its totient is φ = 12441600.

The previous prime is 43422427. The next prime is 43422451. The reversal of 43422444 is 44422434.

It is a happy number.

43422444 is a `hidden beast` number, since 434 + 224 + 4 + 4 = 666.

43422444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

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 in 47 ways as a sum of consecutive naturals, for example, 594792 + ... + 594864.

Almost surely, 2^43422444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43422444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63353472).

43422444 is an abundant number, since it is smaller than the sum of its proper divisors (83284500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43422444 is a wasteful number, since it uses less digits than its factorization.

43422444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168 (or 163 counting only the distinct ones).

The product of its digits is 12288, while the sum is 27.

The square root of 43422444 is about 6589.5708509735. The cubic root of 43422444 is about 351.4833480238.

Adding to 43422444 its reverse (44422434), we get a palindrome (87844878).

It can be divided in two parts, 4342 and 2444, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 43422444 in words is "forty-three million, four hundred twenty-two thousand, four hundred forty-four".