9684045509 has 2 divisors, whose sum is σ = 9684045510. Its totient is φ = 9684045508.

The previous prime is 9684045479. The next prime is 9684045551. The reversal of 9684045509 is 9055404869.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9669772225 + 14273284 = 98335^2 + 3778^2 .

It is a cyclic number.

It is not a de Polignac number, because 9684045509 - 2²⁴ = 9667268293 is a prime.

It is a super-4 number, since 4×9684045509⁴ (a number of 41 digits) contains 4444 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9684045559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4842022754 + 4842022755.

It is an arithmetic number, because the mean of its divisors is an integer number (4842022755).

Almost surely, 2^9684045509 is an apocalyptic number.

It is an amenable number.

9684045509 is a deficient number, since it is larger than the sum of its proper divisors (1).

9684045509 is an equidigital number, since it uses as much as digits as its factorization.

9684045509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1555200, while the sum is 50.

The square root of 9684045509 is about 98407.5480285938. The cubic root of 9684045509 is about 2131.5013263593.

The spelling of 9684045509 in words is "nine billion, six hundred eighty-four million, forty-five thousand, five hundred nine".