494609 has 2 divisors, whose sum is σ = 494610. Its totient is φ = 494608.

The previous prime is 494591. The next prime is 494617. The reversal of 494609 is 906494.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 494209 + 400 = 703^2 + 20^2 .

It is a cyclic number.

It is not a de Polignac number, because 494609 - 2⁸ = 494353 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (494639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247304 + 247305.

It is an arithmetic number, because the mean of its divisors is an integer number (247305).

2⁴⁹⁴⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

494609 is a deficient number, since it is larger than the sum of its proper divisors (1).

494609 is an equidigital number, since it uses as much as digits as its factorization.

494609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 494609 is about 703.2844374789. The cubic root of 494609 is about 79.0837652339.

The spelling of 494609 in words is "four hundred ninety-four thousand, six hundred nine".