398323 has 2 divisors, whose sum is σ = 398324. Its totient is φ = 398322.

The previous prime is 398311. The next prime is 398339. The reversal of 398323 is 323893.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 398323 - 2⁹ = 397811 is a prime.

It is a super-2 number, since 2×398323² = 317322424658, which contains 22 as substring.

398323 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 398291 and 398300.

It is not a weakly prime, because it can be changed into another prime (398303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199161 + 199162.

It is an arithmetic number, because the mean of its divisors is an integer number (199162).

2³⁹⁸³²³ is an apocalyptic number.

398323 is a deficient number, since it is larger than the sum of its proper divisors (1).

398323 is an equidigital number, since it uses as much as digits as its factorization.

398323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 28.

The square root of 398323 is about 631.1283546158. The cubic root of 398323 is about 73.5775170576.

The spelling of 398323 in words is "three hundred ninety-eight thousand, three hundred twenty-three".