3994825 has 6 divisors (see below), whose sum is σ = 4953614. Its totient is φ = 3195840.

The previous prime is 3994817. The next prime is 3994841. The reversal of 3994825 is 5284993.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 46656 + 3948169 = 216^2 + 1987^2 .

It is not a de Polignac number, because 3994825 - 2³ = 3994817 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79872 + ... + 79921.

Almost surely, 2^3994825 is an apocalyptic number.

It is an amenable number.

3994825 is a deficient number, since it is larger than the sum of its proper divisors (958789).

3994825 is a wasteful number, since it uses less digits than its factorization.

3994825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159803 (or 159798 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 3994825 is about 1998.7058312818. The cubic root of 3994825 is about 158.6716189833.

It can be divided in two parts, 39 and 94825, that added together give a square (94864 = 308²).

The spelling of 3994825 in words is "three million, nine hundred ninety-four thousand, eight hundred twenty-five".