3985745 has 12 divisors (see below), whose sum is σ = 4886580. Its totient is φ = 3120864.

The previous prime is 3985721. The next prime is 3985777. The reversal of 3985745 is 5475893.

3985745 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 2 ways, for example, as 2729104 + 1256641 = 1652^2 + 1121^2 .

It is not a de Polignac number, because 3985745 - 2¹⁶ = 3920209 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 17291 + ... + 17519.

It is an arithmetic number, because the mean of its divisors is an integer number (407215).

Almost surely, 2^3985745 is an apocalyptic number.

It is an amenable number.

3985745 is a deficient number, since it is larger than the sum of its proper divisors (900835).

3985745 is an equidigital number, since it uses as much as digits as its factorization.

3985745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 293 counting only the distinct ones).

The product of its digits is 151200, while the sum is 41.

The square root of 3985745 is about 1996.4330692513. The cubic root of 3985745 is about 158.5513107302.

The spelling of 3985745 in words is "three million, nine hundred eighty-five thousand, seven hundred forty-five".