9987017 has 4 divisors (see below), whose sum is σ = 10019856. Its totient is φ = 9954180.

The previous prime is 9987013. The next prime is 9987031. The reversal of 9987017 is 7107899.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9987017 - 2² = 9987013 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9987013) 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, 15959 + ... + 16572.

It is an arithmetic number, because the mean of its divisors is an integer number (2504964).

Almost surely, 2^9987017 is an apocalyptic number.

It is an amenable number.

9987017 is a deficient number, since it is larger than the sum of its proper divisors (32839).

9987017 is a wasteful number, since it uses less digits than its factorization.

9987017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32838.

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 9987017 is about 3160.2242009073. The cubic root of 9987017 is about 215.3501918724.

The spelling of 9987017 in words is "nine million, nine hundred eighty-seven thousand, seventeen".