43221404 has 12 divisors (see below), whose sum is σ = 75765144. Its totient is φ = 21574224.

The previous prime is 43221403. The next prime is 43221413. The reversal of 43221404 is 40412234.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43221403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6362 + ... + 11265.

It is an arithmetic number, because the mean of its divisors is an integer number (6313762).

Almost surely, 2^43221404 is an apocalyptic number.

It is an amenable number.

43221404 is a deficient number, since it is larger than the sum of its proper divisors (32543740).

43221404 is a wasteful number, since it uses less digits than its factorization.

43221404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18244 (or 18242 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 43221404 is about 6574.2987458740. The cubic root of 43221404 is about 350.9400687172.

Adding to 43221404 its reverse (40412234), we get a palindrome (83633638).

The spelling of 43221404 in words is "forty-three million, two hundred twenty-one thousand, four hundred four".