3871871 has 2 divisors, whose sum is σ = 3871872. Its totient is φ = 3871870.

The previous prime is 3871841. The next prime is 3871883. The reversal of 3871871 is 1781783.

It is a strong prime.

It is an emirp because it is prime and its reverse (1781783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3871871 - 2¹⁰ = 3870847 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3871811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1935935 + 1935936.

It is an arithmetic number, because the mean of its divisors is an integer number (1935936).

Almost surely, 2^3871871 is an apocalyptic number.

3871871 is a deficient number, since it is larger than the sum of its proper divisors (1).

3871871 is an equidigital number, since it uses as much as digits as its factorization.

3871871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9408, while the sum is 35.

The square root of 3871871 is about 1967.7070412030. The cubic root of 3871871 is about 157.0267443317.

The spelling of 3871871 in words is "three million, eight hundred seventy-one thousand, eight hundred seventy-one".