3986771 has 2 divisors, whose sum is σ = 3986772. Its totient is φ = 3986770.

The previous prime is 3986767. The next prime is 3986783. The reversal of 3986771 is 1776893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3986771 - 2² = 3986767 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (3986711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1993385 + 1993386.

It is an arithmetic number, because the mean of its divisors is an integer number (1993386).

Almost surely, 2^3986771 is an apocalyptic number.

3986771 is a deficient number, since it is larger than the sum of its proper divisors (1).

3986771 is an equidigital number, since it uses as much as digits as its factorization.

3986771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 41.

The square root of 3986771 is about 1996.6900109932. The cubic root of 3986771 is about 158.5649141835.

The spelling of 3986771 in words is "three million, nine hundred eighty-six thousand, seven hundred seventy-one".