3984887 has 4 divisors (see below), whose sum is σ = 3995040. Its totient is φ = 3974736.

The previous prime is 3984859. The next prime is 3984917. The reversal of 3984887 is 7884893.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3984887 - 2⁶ = 3984823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3984287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4463 + ... + 5280.

It is an arithmetic number, because the mean of its divisors is an integer number (998760).

Almost surely, 2^3984887 is an apocalyptic number.

3984887 is a deficient number, since it is larger than the sum of its proper divisors (10153).

3984887 is an equidigital number, since it uses as much as digits as its factorization.

3984887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10152.

The product of its digits is 387072, while the sum is 47.

The square root of 3984887 is about 1996.2181744489. The cubic root of 3984887 is about 158.5399329503.

The spelling of 3984887 in words is "three million, nine hundred eighty-four thousand, eight hundred eighty-seven".