3966443 has 4 divisors (see below), whose sum is σ = 4271568. Its totient is φ = 3661320.

The previous prime is 3966439. The next prime is 3966503. The reversal of 3966443 is 3446693.

It is a happy number.

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

It is not a de Polignac number, because 3966443 - 2² = 3966439 is a prime.

It is a d-powerful number, because it can be written as 3¹⁰ + 9² + 6⁸ + 6⁸ + 4⁴ + 4⁷ + 3¹² .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3966433) 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, 152543 + ... + 152568.

It is an arithmetic number, because the mean of its divisors is an integer number (1067892).

Almost surely, 2^3966443 is an apocalyptic number.

3966443 is a deficient number, since it is larger than the sum of its proper divisors (305125).

3966443 is a wasteful number, since it uses less digits than its factorization.

3966443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305124.

The product of its digits is 46656, while the sum is 35.

The square root of 3966443 is about 1991.5930809279. The cubic root of 3966443 is about 158.2949545638.

The spelling of 3966443 in words is "three million, nine hundred sixty-six thousand, four hundred forty-three".