9908539 has 4 divisors (see below), whose sum is σ = 9923040. Its totient is φ = 9894040.

The previous prime is 9908537. The next prime is 9908551. The reversal of 9908539 is 9358099.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9358099 = 2707 ⋅3457.

It is a cyclic number.

It is not a de Polignac number, because 9908539 - 2¹ = 9908537 is a prime.

It is a super-2 number, since 2×9908539² = 196358290229042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9908495 and 9908504.

It is not an unprimeable number, because it can be changed into a prime (9908531) by changing a digit.

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, 6172 + ... + 7609.

It is an arithmetic number, because the mean of its divisors is an integer number (2480760).

Almost surely, 2^9908539 is an apocalyptic number.

9908539 is a deficient number, since it is larger than the sum of its proper divisors (14501).

9908539 is a wasteful number, since it uses less digits than its factorization.

9908539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14500.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 9908539 is about 3147.7831882136. The cubic root of 9908539 is about 214.7846338072.

The spelling of 9908539 in words is "nine million, nine hundred eight thousand, five hundred thirty-nine".