398603 has 4 divisors (see below), whose sum is σ = 400320. Its totient is φ = 396888.

The previous prime is 398591. The next prime is 398609. The reversal of 398603 is 306893.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 398603 - 2⁶ = 398539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398609) 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, 443 + ... + 996.

It is an arithmetic number, because the mean of its divisors is an integer number (100080).

2³⁹⁸⁶⁰³ is an apocalyptic number.

398603 is a deficient number, since it is larger than the sum of its proper divisors (1717).

398603 is a wasteful number, since it uses less digits than its factorization.

398603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 398603 is about 631.3501405718. The cubic root of 398603 is about 73.5947533870.

It can be divided in two parts, 398 and 603, that added together give a palindrome (1001).

The spelling of 398603 in words is "three hundred ninety-eight thousand, six hundred three".