3966143 has 4 divisors (see below), whose sum is σ = 4138608. Its totient is φ = 3793680.

The previous prime is 3966139. The next prime is 3966161. The reversal of 3966143 is 3416693.

It is a happy number.

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 3966143 - 2² = 3966139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3966113) 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, 86198 + ... + 86243.

It is an arithmetic number, because the mean of its divisors is an integer number (1034652).

Almost surely, 2^3966143 is an apocalyptic number.

3966143 is a deficient number, since it is larger than the sum of its proper divisors (172465).

3966143 is a wasteful number, since it uses less digits than its factorization.

3966143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172464.

The product of its digits is 11664, while the sum is 32.

The square root of 3966143 is about 1991.5177629135. The cubic root of 3966143 is about 158.2909636091.

The spelling of 3966143 in words is "three million, nine hundred sixty-six thousand, one hundred forty-three".