398601223 has 2 divisors, whose sum is σ = 398601224. Its totient is φ = 398601222.

The previous prime is 398601191. The next prime is 398601233. The reversal of 398601223 is 322106893.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (322106893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 398601223 - 2⁵ = 398601191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398601233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199300611 + 199300612.

It is an arithmetic number, because the mean of its divisors is an integer number (199300612).

Almost surely, 2^398601223 is an apocalyptic number.

398601223 is a deficient number, since it is larger than the sum of its proper divisors (1).

398601223 is an equidigital number, since it uses as much as digits as its factorization.

398601223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 398601223 is about 19964.9999499123. Note that the first 4 decimals coincide. The cubic root of 398601223 is about 735.9464402335.

The spelling of 398601223 in words is "three hundred ninety-eight million, six hundred one thousand, two hundred twenty-three".