3966843 has 4 divisors (see below), whose sum is σ = 5289128. Its totient is φ = 2644560.

The previous prime is 3966817. The next prime is 3966857. The reversal of 3966843 is 3486693.

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

It is not a de Polignac number, because 3966843 - 2⁶ = 3966779 is a prime.

It is a d-powerful number, because it can be written as 3¹⁰ + 9³ + 6⁸ + 6⁸ + 8 + 4⁷ + 3¹² .

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3966803) 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, 661138 + ... + 661143.

It is an arithmetic number, because the mean of its divisors is an integer number (1322282).

Almost surely, 2^3966843 is an apocalyptic number.

3966843 is a deficient number, since it is larger than the sum of its proper divisors (1322285).

3966843 is a wasteful number, since it uses less digits than its factorization.

3966843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322284.

The product of its digits is 93312, while the sum is 39.

The square root of 3966843 is about 1991.6935005166. The cubic root of 3966843 is about 158.3002755238.

The spelling of 3966843 in words is "three million, nine hundred sixty-six thousand, eight hundred forty-three".