9989537 has 4 divisors (see below), whose sum is σ = 10001220. Its totient is φ = 9977856.

The previous prime is 9989509. The next prime is 9989569. The reversal of 9989537 is 7359899.

9989537 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7359899 = 241 ⋅30539.

It can be written as a sum of positive squares in 2 ways, for example, as 4532641 + 5456896 = 2129^2 + 2336^2 .

It is a cyclic number.

It is not a de Polignac number, because 9989537 - 2¹⁴ = 9973153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9989587) 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, 4448 + ... + 6305.

It is an arithmetic number, because the mean of its divisors is an integer number (2500305).

Almost surely, 2^9989537 is an apocalyptic number.

It is an amenable number.

9989537 is a deficient number, since it is larger than the sum of its proper divisors (11683).

9989537 is a wasteful number, since it uses less digits than its factorization.

9989537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11682.

The product of its digits is 612360, while the sum is 50.

The square root of 9989537 is about 3160.6228816485. The cubic root of 9989537 is about 215.3683032813.

The spelling of 9989537 in words is "nine million, nine hundred eighty-nine thousand, five hundred thirty-seven".