3986445 has 16 divisors (see below), whose sum is σ = 6584832. Its totient is φ = 2057280.

The previous prime is 3986441. The next prime is 3986459. The reversal of 3986445 is 5446893.

3986445 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 3986445 - 2² = 3986441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3986441) 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, 3822 + ... + 4751.

It is an arithmetic number, because the mean of its divisors is an integer number (411552).

Almost surely, 2^3986445 is an apocalyptic number.

It is an amenable number.

3986445 is a deficient number, since it is larger than the sum of its proper divisors (2598387).

3986445 is a wasteful number, since it uses less digits than its factorization.

3986445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8612.

The product of its digits is 103680, while the sum is 39.

The square root of 3986445 is about 1996.6083742186. The cubic root of 3986445 is about 158.5605920917.

The spelling of 3986445 in words is "three million, nine hundred eighty-six thousand, four hundred forty-five".