9987159 has 16 divisors (see below), whose sum is σ = 16389632. Its totient is φ = 5267808.

The previous prime is 9987157. The next prime is 9987181. The reversal of 9987159 is 9517899.

It is not a de Polignac number, because 9987159 - 2¹ = 9987157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9987157) 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 15 ways as a sum of consecutive naturals, for example, 18019 + ... + 18564.

It is an arithmetic number, because the mean of its divisors is an integer number (1024352).

Almost surely, 2^9987159 is an apocalyptic number.

9987159 is a deficient number, since it is larger than the sum of its proper divisors (6402473).

9987159 is a wasteful number, since it uses less digits than its factorization.

9987159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36606.

The product of its digits is 204120, while the sum is 48.

The square root of 9987159 is about 3160.2466675878. The cubic root of 9987159 is about 215.3512125169.

The spelling of 9987159 in words is "nine million, nine hundred eighty-seven thousand, one hundred fifty-nine".