3987806 has 8 divisors (see below), whose sum is σ = 6008520. Its totient is φ = 1984968.

The previous prime is 3987799. The next prime is 3987811. The reversal of 3987806 is 6087893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3896 + ... + 4811.

It is an arithmetic number, because the mean of its divisors is an integer number (751065).

Almost surely, 2^3987806 is an apocalyptic number.

3987806 is a deficient number, since it is larger than the sum of its proper divisors (2020714).

3987806 is a wasteful number, since it uses less digits than its factorization.

3987806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8938.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 3987806 is about 1996.9491731138. The cubic root of 3987806 is about 158.5786346009.

The spelling of 3987806 in words is "three million, nine hundred eighty-seven thousand, eight hundred six".