9998199493 has 2 divisors, whose sum is σ = 9998199494. Its totient is φ = 9998199492.

The previous prime is 9998199487. The next prime is 9998199499. The reversal of 9998199493 is 3949918999.

9998199493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (9998199487) and next prime (9998199499).

It can be written as a sum of positive squares in only one way, i.e., 9948666049 + 49533444 = 99743^2 + 7038^2 .

It is a cyclic number.

It is not a de Polignac number, because 9998199493 - 2²¹ = 9996102341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9998199499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999099746 + 4999099747.

It is an arithmetic number, because the mean of its divisors is an integer number (4999099747).

Almost surely, 2^9998199493 is an apocalyptic number.

It is an amenable number.

9998199493 is a deficient number, since it is larger than the sum of its proper divisors (1).

9998199493 is an equidigital number, since it uses as much as digits as its factorization.

9998199493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51018336, while the sum is 70.

The square root of 9998199493 is about 99990.9970597353. The cubic root of 9998199493 is about 2154.3053797794.

The spelling of 9998199493 in words is "nine billion, nine hundred ninety-eight million, one hundred ninety-nine thousand, four hundred ninety-three".