3855988 has 12 divisors (see below), whose sum is σ = 6771492. Its totient is φ = 1921280.

The previous prime is 3855983. The next prime is 3855989. The reversal of 3855988 is 8895583.

It can be written as a sum of positive squares in 2 ways, for example, as 2108304 + 1747684 = 1452^2 + 1322^2 .

It is a super-2 number, since 2×3855988² = 29737286912288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3855983) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 253 + ... + 2788.

It is an arithmetic number, because the mean of its divisors is an integer number (564291).

Almost surely, 2^3855988 is an apocalyptic number.

It is an amenable number.

3855988 is a deficient number, since it is larger than the sum of its proper divisors (2915504).

3855988 is a wasteful number, since it uses less digits than its factorization.

3855988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3362 (or 3360 counting only the distinct ones).

The product of its digits is 345600, while the sum is 46.

The square root of 3855988 is about 1963.6669778758. Note that the first 3 decimals coincide. The cubic root of 3855988 is about 156.8117342496.

The spelling of 3855988 in words is "three million, eight hundred fifty-five thousand, nine hundred eighty-eight".