9640845829 has 2 divisors, whose sum is σ = 9640845830. Its totient is φ = 9640845828.

The previous prime is 9640845793. The next prime is 9640845839. The reversal of 9640845829 is 9285480469.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5158543329 + 4482302500 = 71823^2 + 66950^2 .

It is a cyclic number.

It is not a de Polignac number, because 9640845829 - 2⁹ = 9640845317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9640845829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9640845839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4820422914 + 4820422915.

It is an arithmetic number, because the mean of its divisors is an integer number (4820422915).

Almost surely, 2^9640845829 is an apocalyptic number.

It is an amenable number.

9640845829 is a deficient number, since it is larger than the sum of its proper divisors (1).

9640845829 is an equidigital number, since it uses as much as digits as its factorization.

9640845829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4976640, while the sum is 55.

The square root of 9640845829 is about 98187.8089632313. The cubic root of 9640845829 is about 2128.3271213913.

The spelling of 9640845829 in words is "nine billion, six hundred forty million, eight hundred forty-five thousand, eight hundred twenty-nine".