4040443 has 4 divisors (see below), whose sum is σ = 4407768. Its totient is φ = 3673120.

The previous prime is 4040431. The next prime is 4040459. The reversal of 4040443 is 3440404.

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

It is not a de Polignac number, because 4040443 - 2⁵ = 4040411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4040443.

It is not an unprimeable number, because it can be changed into a prime (4040473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183646 + ... + 183667.

It is an arithmetic number, because the mean of its divisors is an integer number (1101942).

Almost surely, 2^4040443 is an apocalyptic number.

4040443 is a deficient number, since it is larger than the sum of its proper divisors (367325).

4040443 is a wasteful number, since it uses less digits than its factorization.

4040443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367324.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 4040443 is about 2010.0853215722. The cubic root of 4040443 is about 159.2733060336.

Adding to 4040443 its reverse (3440404), we get a palindrome (7480847).

The spelling of 4040443 in words is "four million, forty thousand, four hundred forty-three".