9820493 has 2 divisors, whose sum is σ = 9820494. Its totient is φ = 9820492.

The previous prime is 9820487. The next prime is 9820513. The reversal of 9820493 is 3940289.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5098564 + 4721929 = 2258^2 + 2173^2 .

It is an emirp because it is prime and its reverse (3940289) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9820493 - 2¹² = 9816397 is a prime.

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 (9820403) 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 as a sum of consecutive naturals, namely, 4910246 + 4910247.

It is an arithmetic number, because the mean of its divisors is an integer number (4910247).

Almost surely, 2^9820493 is an apocalyptic number.

It is an amenable number.

9820493 is a deficient number, since it is larger than the sum of its proper divisors (1).

9820493 is an equidigital number, since it uses as much as digits as its factorization.

9820493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 9820493 is about 3133.7665835221. The cubic root of 9820493 is about 214.1465572489.

The spelling of 9820493 in words is "nine million, eight hundred twenty thousand, four hundred ninety-three".