398355223 has 16 divisors (see below), whose sum is σ = 471905280. Its totient is φ = 329013216.

The previous prime is 398355187. The next prime is 398355229. The reversal of 398355223 is 322553893.

It is a happy number.

It is not a de Polignac number, because 398355223 - 2⁹ = 398354711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398355229) 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 in 15 ways as a sum of consecutive naturals, for example, 117490 + ... + 120832.

It is an arithmetic number, because the mean of its divisors is an integer number (29494080).

Almost surely, 2^398355223 is an apocalyptic number.

398355223 is a deficient number, since it is larger than the sum of its proper divisors (73550057).

398355223 is a wasteful number, since it uses less digits than its factorization.

398355223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3966.

The product of its digits is 194400, while the sum is 40.

The square root of 398355223 is about 19958.8382176919. The cubic root of 398355223 is about 735.7950106253.

The spelling of 398355223 in words is "three hundred ninety-eight million, three hundred fifty-five thousand, two hundred twenty-three".