9820005497 has 2 divisors, whose sum is σ = 9820005498. Its totient is φ = 9820005496.

The previous prime is 9820005451. The next prime is 9820005523. The reversal of 9820005497 is 7945000289.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8371518016 + 1448487481 = 91496^2 + 38059^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9820005497 is a prime.

It is a super-2 number, since 2×9820005497² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9820001497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4910002748 + 4910002749.

It is an arithmetic number, because the mean of its divisors is an integer number (4910002749).

Almost surely, 2^9820005497 is an apocalyptic number.

It is an amenable number.

9820005497 is a deficient number, since it is larger than the sum of its proper divisors (1).

9820005497 is an equidigital number, since it uses as much as digits as its factorization.

9820005497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 9820005497 is about 99095.9408704514. The cubic root of 9820005497 is about 2141.4301367882.

The spelling of 9820005497 in words is "nine billion, eight hundred twenty million, five thousand, four hundred ninety-seven".