3946943 has 16 divisors (see below), whose sum is σ = 5300736. Its totient is φ = 2838240.

The previous prime is 3946939. The next prime is 3946981. The reversal of 3946943 is 3496493.

It is a cyclic number.

It is not a de Polignac number, because 3946943 - 2² = 3946939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3946897 and 3946906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3946913) 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, 971 + ... + 2972.

It is an arithmetic number, because the mean of its divisors is an integer number (331296).

Almost surely, 2^3946943 is an apocalyptic number.

3946943 is a deficient number, since it is larger than the sum of its proper divisors (1353793).

3946943 is a wasteful number, since it uses less digits than its factorization.

3946943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3974.

The product of its digits is 69984, while the sum is 38.

The square root of 3946943 is about 1986.6914707624. The cubic root of 3946943 is about 158.0351227798.

It can be divided in two parts, 394 and 6943, that added together give a palindrome (7337).

The spelling of 3946943 in words is "three million, nine hundred forty-six thousand, nine hundred forty-three".