3944647 has 18 divisors (see below), whose sum is σ = 4864608. Its totient is φ = 3188808.

The previous prime is 3944627. The next prime is 3944669. The reversal of 3944647 is 7464493.

3944647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3944647 - 2¹⁵ = 3911879 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3944617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 17578 + ... + 17800.

It is an arithmetic number, because the mean of its divisors is an integer number (270256).

Almost surely, 2^3944647 is an apocalyptic number.

3944647 is a deficient number, since it is larger than the sum of its proper divisors (919961).

3944647 is a wasteful number, since it uses less digits than its factorization.

3944647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275 (or 249 counting only the distinct ones).

The product of its digits is 72576, while the sum is 37.

The square root of 3944647 is about 1986.1135415681. The cubic root of 3944647 is about 158.0044729813.

It can be divided in two parts, 39446 and 47, that added together give a palindrome (39493).

The spelling of 3944647 in words is "three million, nine hundred forty-four thousand, six hundred forty-seven".