98999819389 has 2 divisors, whose sum is σ = 98999819390. Its totient is φ = 98999819388.

The previous prime is 98999819377. The next prime is 98999819417. The reversal of 98999819389 is 98391899989.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52739122500 + 46260696889 = 229650^2 + 215083^2 .

It is an emirp because it is prime and its reverse (98391899989) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98999819389 - 2¹⁵ = 98999786621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98999819309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49499909694 + 49499909695.

It is an arithmetic number, because the mean of its divisors is an integer number (49499909695).

Almost surely, 2^98999819389 is an apocalyptic number.

It is an amenable number.

98999819389 is a deficient number, since it is larger than the sum of its proper divisors (1).

98999819389 is an equidigital number, since it uses as much as digits as its factorization.

98999819389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816293376, while the sum is 82.

The spelling of 98999819389 in words is "ninety-eight billion, nine hundred ninety-nine million, eight hundred nineteen thousand, three hundred eighty-nine".