3831987 has 16 divisors (see below), whose sum is σ = 5450112. Its totient is φ = 2386560.

The previous prime is 3831937. The next prime is 3832001. The reversal of 3831987 is 7891383.

It is not a de Polignac number, because 3831987 - 2⁶ = 3831923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3831907) 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 15 ways as a sum of consecutive naturals, for example, 11412 + ... + 11742.

It is an arithmetic number, because the mean of its divisors is an integer number (340632).

Almost surely, 2^3831987 is an apocalyptic number.

3831987 is a deficient number, since it is larger than the sum of its proper divisors (1618125).

3831987 is a wasteful number, since it uses less digits than its factorization.

3831987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578.

The product of its digits is 36288, while the sum is 39.

The square root of 3831987 is about 1957.5461680379. The cubic root of 3831987 is about 156.4857067587.

The spelling of 3831987 in words is "three million, eight hundred thirty-one thousand, nine hundred eighty-seven".