398803 has 4 divisors (see below), whose sum is σ = 422280. Its totient is φ = 375328.

The previous prime is 398771. The next prime is 398813. The reversal of 398803 is 308893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 308893 = 13 ⋅23761.

It is a cyclic number.

It is not a de Polignac number, because 398803 - 2⁵ = 398771 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

398803 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (398813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11713 + ... + 11746.

It is an arithmetic number, because the mean of its divisors is an integer number (105570).

2³⁹⁸⁸⁰³ is an apocalyptic number.

398803 is a deficient number, since it is larger than the sum of its proper divisors (23477).

398803 is a wasteful number, since it uses less digits than its factorization.

398803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23476.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 398803 is about 631.5085114232. The cubic root of 398803 is about 73.6070601096.

The spelling of 398803 in words is "three hundred ninety-eight thousand, eight hundred three".