3987071 has 12 divisors (see below), whose sum is σ = 4446456. Its totient is φ = 3571920.

The previous prime is 3987037. The next prime is 3987077. The reversal of 3987071 is 1707893.

It is not a de Polignac number, because 3987071 - 2¹⁸ = 3724927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3987077) 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, 9845 + ... + 10241.

It is an arithmetic number, because the mean of its divisors is an integer number (370538).

Almost surely, 2^3987071 is an apocalyptic number.

3987071 is a deficient number, since it is larger than the sum of its proper divisors (459385).

3987071 is a wasteful number, since it uses less digits than its factorization.

3987071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502 (or 491 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 3987071 is about 1996.7651339103. The cubic root of 3987071 is about 158.5688913605.

The spelling of 3987071 in words is "three million, nine hundred eighty-seven thousand, seventy-one".