3938871 has 12 divisors (see below), whose sum is σ = 5544312. Its totient is φ = 2487024.

The previous prime is 3938839. The next prime is 3938897. The reversal of 3938871 is 1788393.

It is not a de Polignac number, because 3938871 - 2⁵ = 3938839 is a prime.

It is a super-3 number, since 3×3938871³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3938821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 736 + ... + 2901.

It is an arithmetic number, because the mean of its divisors is an integer number (462026).

Almost surely, 2^3938871 is an apocalyptic number.

3938871 is a deficient number, since it is larger than the sum of its proper divisors (1605441).

3938871 is a wasteful number, since it uses less digits than its factorization.

3938871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3678 (or 3659 counting only the distinct ones).

The product of its digits is 36288, while the sum is 39.

The square root of 3938871 is about 1984.6589127606. The cubic root of 3938871 is about 157.9273152835.

The spelling of 3938871 in words is "three million, nine hundred thirty-eight thousand, eight hundred seventy-one".