9998200057 has 2 divisors, whose sum is σ = 9998200058. Its totient is φ = 9998200056.

The previous prime is 9998200033. The next prime is 9998200061. The reversal of 9998200057 is 7500028999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9326923776 + 671276281 = 96576^2 + 25909^2 .

It is a cyclic number.

It is not a de Polignac number, because 9998200057 - 2¹⁹ = 9997675769 is a prime.

It is not a weakly prime, because it can be changed into another prime (9998200087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999100028 + 4999100029.

It is an arithmetic number, because the mean of its divisors is an integer number (4999100029).

Almost surely, 2^9998200057 is an apocalyptic number.

It is an amenable number.

9998200057 is a deficient number, since it is larger than the sum of its proper divisors (1).

9998200057 is an equidigital number, since it uses as much as digits as its factorization.

9998200057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 49.

The square root of 9998200057 is about 99990.9998799892. Note that the first 3 decimals coincide. The cubic root of 9998200057 is about 2154.3054202877.

The spelling of 9998200057 in words is "nine billion, nine hundred ninety-eight million, two hundred thousand, fifty-seven".