3831885 has 24 divisors (see below), whose sum is σ = 7034040. Its totient is φ = 1923072.

The previous prime is 3831871. The next prime is 3831889. The reversal of 3831885 is 5881383.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 741321 + 3090564 = 861^2 + 1758^2 .

It is not a de Polignac number, because 3831885 - 2¹⁶ = 3766349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3831889) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1740 + ... + 3269.

It is an arithmetic number, because the mean of its divisors is an integer number (293085).

Almost surely, 2^3831885 is an apocalyptic number.

It is an amenable number.

3831885 is a deficient number, since it is larger than the sum of its proper divisors (3202155).

3831885 is a wasteful number, since it uses less digits than its factorization.

3831885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5037 (or 5034 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 3831885 is about 1957.5201148392. The cubic root of 3831885 is about 156.4843182986.

The spelling of 3831885 in words is "three million, eight hundred thirty-one thousand, eight hundred eighty-five".