9987532 has 12 divisors (see below), whose sum is σ = 17808336. Its totient is φ = 4899440.

The previous prime is 9987511. The next prime is 9987533. The reversal of 9987532 is 2357899.

It is a happy number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9987533) 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, 23344 + ... + 23767.

It is an arithmetic number, because the mean of its divisors is an integer number (1484028).

Almost surely, 2^9987532 is an apocalyptic number.

It is an amenable number.

9987532 is a deficient number, since it is larger than the sum of its proper divisors (7820804).

9987532 is a wasteful number, since it uses less digits than its factorization.

9987532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47168 (or 47166 counting only the distinct ones).

The product of its digits is 136080, while the sum is 43.

The square root of 9987532 is about 3160.3056814175. The cubic root of 9987532 is about 215.3538934596.

It can be divided in two parts, 99 and 87532, that multiplied together give a palindrome (8665668).

The spelling of 9987532 in words is "nine million, nine hundred eighty-seven thousand, five hundred thirty-two".