398203 has 4 divisors (see below), whose sum is σ = 428848. Its totient is φ = 367560.

The previous prime is 398171. The next prime is 398207. The reversal of 398203 is 302893.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302893 = 499 ⋅607.

It is a cyclic number.

It is not a de Polignac number, because 398203 - 2⁵ = 398171 is a prime.

It is a Duffinian number.

398203 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (398207) 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 in 3 ways as a sum of consecutive naturals, for example, 15303 + ... + 15328.

It is an arithmetic number, because the mean of its divisors is an integer number (107212).

2³⁹⁸²⁰³ is an apocalyptic number.

398203 is a deficient number, since it is larger than the sum of its proper divisors (30645).

398203 is a wasteful number, since it uses less digits than its factorization.

398203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30644.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 398203 is about 631.0332796295. The cubic root of 398203 is about 73.5701275865.

The spelling of 398203 in words is "three hundred ninety-eight thousand, two hundred three".