43424443 has 16 divisors (see below), whose sum is σ = 48690720. Its totient is φ = 38486016.

The previous prime is 43424441. The next prime is 43424449. The reversal of 43424443 is 34442434.

It is a cyclic number.

It is not a de Polignac number, because 43424443 - 2¹ = 43424441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43424441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74971 + ... + 75547.

It is an arithmetic number, because the mean of its divisors is an integer number (3043170).

Almost surely, 2^43424443 is an apocalyptic number.

43424443 is a deficient number, since it is larger than the sum of its proper divisors (5266277).

43424443 is a wasteful number, since it uses less digits than its factorization.

43424443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846.

The product of its digits is 18432, while the sum is 28.

The square root of 43424443 is about 6589.7225283012. The cubic root of 43424443 is about 351.4887415819.

Adding to 43424443 its reverse (34442434), we get a palindrome (77866877).

Subtracting from 43424443 its reverse (34442434), we obtain a square (8982009 = 2997²).

The spelling of 43424443 in words is "forty-three million, four hundred twenty-four thousand, four hundred forty-three".