998203799 has 2 divisors, whose sum is σ = 998203800. Its totient is φ = 998203798.

The previous prime is 998203793. The next prime is 998203837. The reversal of 998203799 is 997302899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 998203799 - 2²⁰ = 997155223 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998203793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499101899 + 499101900.

It is an arithmetic number, because the mean of its divisors is an integer number (499101900).

Almost surely, 2^998203799 is an apocalyptic number.

998203799 is a deficient number, since it is larger than the sum of its proper divisors (1).

998203799 is an equidigital number, since it uses as much as digits as its factorization.

998203799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2204496, while the sum is 56.

The square root of 998203799 is about 31594.3634055190. The cubic root of 998203799 is about 999.4009074932.

The spelling of 998203799 in words is "nine hundred ninety-eight million, two hundred three thousand, seven hundred ninety-nine".