490409 has 8 divisors (see below), whose sum is σ = 527040. Its totient is φ = 454896.

The previous prime is 490393. The next prime is 490417. The reversal of 490409 is 904094.

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 490409 - 2⁴ = 490393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (490459) 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, 764 + ... + 1250.

It is an arithmetic number, because the mean of its divisors is an integer number (65880).

2⁴⁹⁰⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

490409 is a deficient number, since it is larger than the sum of its proper divisors (36631).

490409 is a wasteful number, since it uses less digits than its factorization.

490409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 490409 is about 700.2920819201. The cubic root of 490409 is about 78.8592805491.

The spelling of 490409 in words is "four hundred ninety thousand, four hundred nine".