3944805 has 16 divisors (see below), whose sum is σ = 6336960. Its totient is φ = 2095488.

The previous prime is 3944791. The next prime is 3944807. The reversal of 3944805 is 5084493.

3944805 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 3944805 - 2⁴ = 3944789 is a prime.

It is a super-2 number, since 2×3944805² = 31122972976050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3944807) 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, 5814 + ... + 6456.

It is an arithmetic number, because the mean of its divisors is an integer number (396060).

Almost surely, 2^3944805 is an apocalyptic number.

It is an amenable number.

3944805 is a deficient number, since it is larger than the sum of its proper divisors (2392155).

3944805 is a wasteful number, since it uses less digits than its factorization.

3944805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 3944805 is about 1986.1533173449. The cubic root of 3944805 is about 158.0065825383.

It can be divided in two parts, 39 and 44805, that added together give a palindrome (44844).

The spelling of 3944805 in words is "three million, nine hundred forty-four thousand, eight hundred five".