9988535 has 4 divisors (see below), whose sum is σ = 11986248. Its totient is φ = 7990824.

The previous prime is 9988519. The next prime is 9988553. The reversal of 9988535 is 5358899.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9988535 - 2⁴ = 9988519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9988535.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 998849 + ... + 998858.

It is an arithmetic number, because the mean of its divisors is an integer number (2996562).

Almost surely, 2^9988535 is an apocalyptic number.

9988535 is a deficient number, since it is larger than the sum of its proper divisors (1997713).

9988535 is a wasteful number, since it uses less digits than its factorization.

9988535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997712.

The product of its digits is 388800, while the sum is 47.

The square root of 9988535 is about 3160.4643646148. The cubic root of 9988535 is about 215.3611022049.

The spelling of 9988535 in words is "nine million, nine hundred eighty-eight thousand, five hundred thirty-five".