490489 has 4 divisors (see below), whose sum is σ = 491920. Its totient is φ = 489060.

The previous prime is 490481. The next prime is 490493. The reversal of 490489 is 984094.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 984094 = 2 ⋅492047.

It is a cyclic number.

It is not a de Polignac number, because 490489 - 2³ = 490481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (490481) 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, 142 + ... + 1000.

It is an arithmetic number, because the mean of its divisors is an integer number (122980).

2⁴⁹⁰⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

490489 is a deficient number, since it is larger than the sum of its proper divisors (1431).

490489 is an equidigital number, since it uses as much as digits as its factorization.

490489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 490489 is about 700.3491986145. The cubic root of 490489 is about 78.8635683983.

It can be divided in two parts, 490 and 489, that added together give a palindrome (979).

The spelling of 490489 in words is "four hundred ninety thousand, four hundred eighty-nine".