98783968909 has 2 divisors, whose sum is σ = 98783968910. Its totient is φ = 98783968908.

The previous prime is 98783968873. The next prime is 98783968939. The reversal of 98783968909 is 90986938789.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66672404100 + 32111564809 = 258210^2 + 179197^2 .

It is a cyclic number.

It is not a de Polignac number, because 98783968909 - 2¹⁷ = 98783837837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98783968939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49391984454 + 49391984455.

It is an arithmetic number, because the mean of its divisors is an integer number (49391984455).

Almost surely, 2^98783968909 is an apocalyptic number.

It is an amenable number.

98783968909 is a deficient number, since it is larger than the sum of its proper divisors (1).

98783968909 is an equidigital number, since it uses as much as digits as its factorization.

98783968909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423263232, while the sum is 76.

The spelling of 98783968909 in words is "ninety-eight billion, seven hundred eighty-three million, nine hundred sixty-eight thousand, nine hundred nine".