3971288 has 16 divisors (see below), whose sum is σ = 7467360. Its totient is φ = 1980000.

The previous prime is 3971287. The next prime is 3971299. The reversal of 3971288 is 8821793.

3971288 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3971288² = 31542256757888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3971281) 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, 4913 + ... + 5663.

It is an arithmetic number, because the mean of its divisors is an integer number (466710).

Almost surely, 2^3971288 is an apocalyptic number.

It is an amenable number.

3971288 is a deficient number, since it is larger than the sum of its proper divisors (3496072).

3971288 is a wasteful number, since it uses less digits than its factorization.

3971288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418 (or 1414 counting only the distinct ones).

The product of its digits is 24192, while the sum is 38.

The square root of 3971288 is about 1992.8090726409. The cubic root of 3971288 is about 158.3593806332.

The spelling of 3971288 in words is "three million, nine hundred seventy-one thousand, two hundred eighty-eight".