490823 has 8 divisors (see below), whose sum is σ = 516096. Its totient is φ = 466200.

The previous prime is 490783. The next prime is 490829. The reversal of 490823 is 328094.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 490823 - 2¹⁰ = 489799 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 490792 and 490801.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 490823.

It is not an unprimeable number, because it can be changed into a prime (490829) 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 7 ways as a sum of consecutive naturals, for example, 2090 + ... + 2312.

It is an arithmetic number, because the mean of its divisors is an integer number (64512).

2⁴⁹⁰⁸²³ is an apocalyptic number.

490823 is a deficient number, since it is larger than the sum of its proper divisors (25273).

490823 is a wasteful number, since it uses less digits than its factorization.

490823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 490823 is about 700.5876105099. The cubic root of 490823 is about 78.8814651334.

The spelling of 490823 in words is "four hundred ninety thousand, eight hundred twenty-three".