490403 has 4 divisors (see below), whose sum is σ = 491808. Its totient is φ = 489000.

The previous prime is 490393. The next prime is 490417. The reversal of 490403 is 304094.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 490403 - 2⁶ = 490339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (490453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278 + ... + 1028.

It is an arithmetic number, because the mean of its divisors is an integer number (122952).

2⁴⁹⁰⁴⁰³ is an apocalyptic number.

490403 is a deficient number, since it is larger than the sum of its proper divisors (1405).

490403 is an equidigital number, since it uses as much as digits as its factorization.

490403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 490403 is about 700.2877979802. The cubic root of 490403 is about 78.8589589416.

Adding to 490403 its reverse (304094), we get a palindrome (794497).

The spelling of 490403 in words is "four hundred ninety thousand, four hundred three".