40443443 has 4 divisors (see below), whose sum is σ = 40458600. Its totient is φ = 40428288.

The previous prime is 40443433. The next prime is 40443449. The reversal of 40443443 is 34434404.

40443443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40443443 - 2²⁰ = 39394867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40443449) 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 in 3 ways as a sum of consecutive naturals, for example, 2393 + ... + 9306.

It is an arithmetic number, because the mean of its divisors is an integer number (10114650).

Almost surely, 2^40443443 is an apocalyptic number.

40443443 is a deficient number, since it is larger than the sum of its proper divisors (15157).

40443443 is a wasteful number, since it uses less digits than its factorization.

40443443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15156.

The product of its (nonzero) digits is 9216, while the sum is 26.

The square root of 40443443 is about 6359.5159406986. The cubic root of 40443443 is about 343.2543424861.

Adding to 40443443 its reverse (34434404), we get a palindrome (74877847).

The spelling of 40443443 in words is "forty million, four hundred forty-three thousand, four hundred forty-three".