9820440313 has 2 divisors, whose sum is σ = 9820440314. Its totient is φ = 9820440312.

The previous prime is 9820440299. The next prime is 9820440401. The reversal of 9820440313 is 3130440289.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9329241744 + 491198569 = 96588^2 + 22163^2 .

It is an emirp because it is prime and its reverse (3130440289) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9820440313 - 2²⁹ = 9283569401 is a prime.

It is not a weakly prime, because it can be changed into another prime (9820440613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4910220156 + 4910220157.

It is an arithmetic number, because the mean of its divisors is an integer number (4910220157).

Almost surely, 2^9820440313 is an apocalyptic number.

It is an amenable number.

9820440313 is a deficient number, since it is larger than the sum of its proper divisors (1).

9820440313 is an equidigital number, since it uses as much as digits as its factorization.

9820440313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 9820440313 is about 99098.1347604484. The cubic root of 9820440313 is about 2141.4617428242.

The spelling of 9820440313 in words is "nine billion, eight hundred twenty million, four hundred forty thousand, three hundred thirteen".