3988971 has 12 divisors (see below), whose sum is σ = 6585072. Its totient is φ = 2279376.

The previous prime is 3988969. The next prime is 3988991. The reversal of 3988971 is 1798893.

It is not a de Polignac number, because 3988971 - 2¹ = 3988969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3988961) 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, 31596 + ... + 31721.

It is an arithmetic number, because the mean of its divisors is an integer number (548756).

Almost surely, 2^3988971 is an apocalyptic number.

3988971 is a deficient number, since it is larger than the sum of its proper divisors (2596101).

3988971 is a wasteful number, since it uses less digits than its factorization.

3988971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63330 (or 63327 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 3988971 is about 1997.2408467684. The cubic root of 3988971 is about 158.5940755160.

The spelling of 3988971 in words is "three million, nine hundred eighty-eight thousand, nine hundred seventy-one".