494009 has 4 divisors (see below), whose sum is σ = 506100. Its totient is φ = 481920.

The previous prime is 493993. The next prime is 494023. The reversal of 494009 is 900494.

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

It can be written as a sum of positive squares in 2 ways, for example, as 157609 + 336400 = 397^2 + 580^2 .

It is a cyclic number.

It is not a de Polignac number, because 494009 - 2⁴ = 493993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (494029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5984 + ... + 6065.

It is an arithmetic number, because the mean of its divisors is an integer number (126525).

2⁴⁹⁴⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

494009 is a deficient number, since it is larger than the sum of its proper divisors (12091).

494009 is a wasteful number, since it uses less digits than its factorization.

494009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12090.

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

The square root of 494009 is about 702.8577380950. The cubic root of 494009 is about 79.0517739984.

The spelling of 494009 in words is "four hundred ninety-four thousand, nine".