3871771 has 4 divisors (see below), whose sum is σ = 3893344. Its totient is φ = 3850200.

The previous prime is 3871759. The next prime is 3871781. The reversal of 3871771 is 1771783.

3871771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3871771 is a prime.

It is a super-2 number, since 2×3871771² = 29981221352882, which contains 22 as substring.

It is a Duffinian number.

3871771 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3871781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10515 + ... + 10876.

It is an arithmetic number, because the mean of its divisors is an integer number (973336).

Almost surely, 2^3871771 is an apocalyptic number.

3871771 is a deficient number, since it is larger than the sum of its proper divisors (21573).

3871771 is a wasteful number, since it uses less digits than its factorization.

3871771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21572.

The product of its digits is 8232, while the sum is 34.

The square root of 3871771 is about 1967.6816307523. The cubic root of 3871771 is about 157.0253924607.

The spelling of 3871771 in words is "three million, eight hundred seventy-one thousand, seven hundred seventy-one".