398238199 has 2 divisors, whose sum is σ = 398238200. Its totient is φ = 398238198.

The previous prime is 398238173. The next prime is 398238221. The reversal of 398238199 is 991832893.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 398238199 - 2¹¹ = 398236151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398238899) 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, 199119099 + 199119100.

It is an arithmetic number, because the mean of its divisors is an integer number (199119100).

Almost surely, 2^398238199 is an apocalyptic number.

398238199 is a deficient number, since it is larger than the sum of its proper divisors (1).

398238199 is an equidigital number, since it uses as much as digits as its factorization.

398238199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 52.

The square root of 398238199 is about 19955.9063687922. The cubic root of 398238199 is about 735.7229525697.

The spelling of 398238199 in words is "three hundred ninety-eight million, two hundred thirty-eight thousand, one hundred ninety-nine".