3944681 has 16 divisors (see below), whose sum is σ = 4468800. Its totient is φ = 3457728.

The previous prime is 3944671. The next prime is 3944683. The reversal of 3944681 is 1864493.

3944681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 3944681 - 2⁶ = 3944617 is a prime.

It is a super-2 number, since 2×3944681² = 31121016383522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3944683) 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 15 ways as a sum of consecutive naturals, for example, 28310 + ... + 28448.

It is an arithmetic number, because the mean of its divisors is an integer number (279300).

Almost surely, 2^3944681 is an apocalyptic number.

It is an amenable number.

3944681 is a deficient number, since it is larger than the sum of its proper divisors (524119).

3944681 is a wasteful number, since it uses less digits than its factorization.

3944681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248.

The product of its digits is 20736, while the sum is 35.

The square root of 3944681 is about 1986.1221009797. The cubic root of 3944681 is about 158.0049269414.

The spelling of 3944681 in words is "three million, nine hundred forty-four thousand, six hundred eighty-one".