9984539 has 4 divisors (see below), whose sum is σ = 10197024. Its totient is φ = 9772056.

The previous prime is 9984521. The next prime is 9984563. The reversal of 9984539 is 9354899.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9354899 = 61 ⋅153359.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9984539 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 212437 = 9984539 / (9 + 9 + 8 + 4 + 5 + 3 + 9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9984493 and 9984502.

It is not an unprimeable number, because it can be changed into a prime (9984589) 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, 106172 + ... + 106265.

It is an arithmetic number, because the mean of its divisors is an integer number (2549256).

Almost surely, 2^9984539 is an apocalyptic number.

9984539 is a deficient number, since it is larger than the sum of its proper divisors (212485).

9984539 is a wasteful number, since it uses less digits than its factorization.

9984539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212484.

The product of its digits is 349920, while the sum is 47.

The square root of 9984539 is about 3159.8321157935. The cubic root of 9984539 is about 215.3323793491.

The spelling of 9984539 in words is "nine million, nine hundred eighty-four thousand, five hundred thirty-nine".