3943825 has 12 divisors (see below), whose sum is σ = 4959628. Its totient is φ = 3110400.

The previous prime is 3943799. The next prime is 3943829. The reversal of 3943825 is 5283493.

It is a happy number.

3943825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 7569 + 3936256 = 87^2 + 1984^2 .

It is not a de Polignac number, because 3943825 - 2¹⁵ = 3911057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3943829) 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 11 ways as a sum of consecutive naturals, for example, 745 + ... + 2905.

Almost surely, 2^3943825 is an apocalyptic number.

It is an amenable number.

3943825 is a deficient number, since it is larger than the sum of its proper divisors (1015803).

3943825 is a wasteful number, since it uses less digits than its factorization.

3943825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244 (or 2239 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 3943825 is about 1985.9065939767. The cubic root of 3943825 is about 157.9934970351.

The spelling of 3943825 in words is "three million, nine hundred forty-three thousand, eight hundred twenty-five".