3987018 has 24 divisors (see below), whose sum is σ = 9872928. Its totient is φ = 1139112.

The previous prime is 3987013. The next prime is 3987019. The reversal of 3987018 is 8107893.

It is not an unprimeable number, because it can be changed into a prime (3987013) 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, 15696 + ... + 15947.

It is an arithmetic number, because the mean of its divisors is an integer number (411372).

Almost surely, 2^3987018 is an apocalyptic number.

3987018 is an abundant number, since it is smaller than the sum of its proper divisors (5885910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3987018 is a wasteful number, since it uses less digits than its factorization.

3987018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31658 (or 31655 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 3987018 is about 1996.7518624005. The cubic root of 3987018 is about 158.5681887404.

The spelling of 3987018 in words is "three million, nine hundred eighty-seven thousand, eighteen".