494789 has 2 divisors, whose sum is σ = 494790. Its totient is φ = 494788.

The previous prime is 494783. The next prime is 494803. The reversal of 494789 is 987494.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 348100 + 146689 = 590^2 + 383^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-494789 is a prime.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (494783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247394 + 247395.

It is an arithmetic number, because the mean of its divisors is an integer number (247395).

2⁴⁹⁴⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

494789 is a deficient number, since it is larger than the sum of its proper divisors (1).

494789 is an equidigital number, since it uses as much as digits as its factorization.

494789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 494789 is about 703.4123968200. The cubic root of 494789 is about 79.0933575592.

The spelling of 494789 in words is "four hundred ninety-four thousand, seven hundred eighty-nine".