3885021 has 12 divisors (see below), whose sum is σ = 6413472. Its totient is φ = 2219976.

The previous prime is 3885019. The next prime is 3885031. The reversal of 3885021 is 1205883.

It is a happy number.

It is not a de Polignac number, because 3885021 - 2¹ = 3885019 is a prime.

3885021 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3885001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30771 + ... + 30896.

It is an arithmetic number, because the mean of its divisors is an integer number (534456).

Almost surely, 2^3885021 is an apocalyptic number.

It is an amenable number.

3885021 is a deficient number, since it is larger than the sum of its proper divisors (2528451).

3885021 is a wasteful number, since it uses less digits than its factorization.

3885021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61680 (or 61677 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 3885021 is about 1971.0456615715. The cubic root of 3885021 is about 157.2043129559.

The spelling of 3885021 in words is "three million, eight hundred eighty-five thousand, twenty-one".