9681829 has 2 divisors, whose sum is σ = 9681830. Its totient is φ = 9681828.

The previous prime is 9681809. The next prime is 9681883. The reversal of 9681829 is 9281869.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9641025 + 40804 = 3105^2 + 202^2 .

It is an emirp because it is prime and its reverse (9281869) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9681829 - 2⁵ = 9681797 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9681809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4840914 + 4840915.

It is an arithmetic number, because the mean of its divisors is an integer number (4840915).

Almost surely, 2^9681829 is an apocalyptic number.

It is an amenable number.

9681829 is a deficient number, since it is larger than the sum of its proper divisors (1).

9681829 is an equidigital number, since it uses as much as digits as its factorization.

9681829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 43.

The square root of 9681829 is about 3111.5637547703. The cubic root of 9681829 is about 213.1338692800.

The spelling of 9681829 in words is "nine million, six hundred eighty-one thousand, eight hundred twenty-nine".