3943443 has 16 divisors (see below), whose sum is σ = 6087680. Its totient is φ = 2223936.

The previous prime is 3943427. The next prime is 3943451. The reversal of 3943443 is 3443493.

It is not a de Polignac number, because 3943443 - 2⁴ = 3943427 is a prime.

It is a Duffinian number.

3943443 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3943443.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3943403) 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, 471 + ... + 2847.

It is an arithmetic number, because the mean of its divisors is an integer number (380480).

Almost surely, 2^3943443 is an apocalyptic number.

3943443 is a deficient number, since it is larger than the sum of its proper divisors (2144237).

3943443 is a wasteful number, since it uses less digits than its factorization.

3943443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2466.

The product of its digits is 15552, while the sum is 30.

The square root of 3943443 is about 1985.8104139117. The cubic root of 3943443 is about 157.9883957722.

The spelling of 3943443 in words is "three million, nine hundred forty-three thousand, four hundred forty-three".