9684540239 has 4 divisors (see below), whose sum is σ = 10564953000. Its totient is φ = 8804127480.

The previous prime is 9684540233. The next prime is 9684540269. The reversal of 9684540239 is 9320454869.

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 9684540239 - 2⁸ = 9684539983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9684540233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440206364 + ... + 440206385.

It is an arithmetic number, because the mean of its divisors is an integer number (2641238250).

Almost surely, 2^9684540239 is an apocalyptic number.

9684540239 is a deficient number, since it is larger than the sum of its proper divisors (880412761).

9684540239 is a wasteful number, since it uses less digits than its factorization.

9684540239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880412760.

The product of its (nonzero) digits is 1866240, while the sum is 50.

The square root of 9684540239 is about 98410.0616756234. The cubic root of 9684540239 is about 2131.5376231629.

The spelling of 9684540239 in words is "nine billion, six hundred eighty-four million, five hundred forty thousand, two hundred thirty-nine".