3984687 has 32 divisors (see below), whose sum is σ = 6988800. Its totient is φ = 2195424.

The previous prime is 3984679. The next prime is 3984731. The reversal of 3984687 is 7864893.

It is a happy number.

It is not a de Polignac number, because 3984687 - 2³ = 3984679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3984677) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5118 + ... + 5844.

It is an arithmetic number, because the mean of its divisors is an integer number (218400).

Almost surely, 2^3984687 is an apocalyptic number.

3984687 is a deficient number, since it is larger than the sum of its proper divisors (3004113).

3984687 is a wasteful number, since it uses less digits than its factorization.

3984687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772 (or 766 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 3984687 is about 1996.1680790955. The cubic root of 3984687 is about 158.5372805525.

The spelling of 3984687 in words is "three million, nine hundred eighty-four thousand, six hundred eighty-seven".