398194067 has 2 divisors, whose sum is σ = 398194068. Its totient is φ = 398194066.

The previous prime is 398194063. The next prime is 398194117. The reversal of 398194067 is 760491893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 398194067 - 2² = 398194063 is a prime.

It is not a weakly prime, because it can be changed into another prime (398194063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199097033 + 199097034.

It is an arithmetic number, because the mean of its divisors is an integer number (199097034).

Almost surely, 2^398194067 is an apocalyptic number.

398194067 is a deficient number, since it is larger than the sum of its proper divisors (1).

398194067 is an equidigital number, since it uses as much as digits as its factorization.

398194067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 398194067 is about 19954.8006003568. The cubic root of 398194067 is about 735.6957744262.

The spelling of 398194067 in words is "three hundred ninety-eight million, one hundred ninety-four thousand, sixty-seven".