3987136 has 14 divisors (see below), whose sum is σ = 7912100. Its totient is φ = 1993536.

The previous prime is 3987121. The next prime is 3987149. The reversal of 3987136 is 6317893.

3987136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 3987095 and 3987104.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 31086 + ... + 31213.

It is an arithmetic number, because the mean of its divisors is an integer number (565150).

Almost surely, 2^3987136 is an apocalyptic number.

It is an amenable number.

3987136 is a deficient number, since it is larger than the sum of its proper divisors (3924964).

3987136 is an equidigital number, since it uses as much as digits as its factorization.

3987136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62311 (or 62301 counting only the distinct ones).

The product of its digits is 27216, while the sum is 37.

The square root of 3987136 is about 1996.7814101699. The cubic root of 3987136 is about 158.5697530558.

The spelling of 3987136 in words is "three million, nine hundred eighty-seven thousand, one hundred thirty-six".