474809 has 2 divisors, whose sum is σ = 474810. Its totient is φ = 474808.

The previous prime is 474787. The next prime is 474811. The reversal of 474809 is 908474.

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., 426409 + 48400 = 653^2 + 220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-474809 is a prime.

Together with 474811, it forms a pair of twin primes.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 474809.

It is not a weakly prime, because it can be changed into another prime (474839) 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 as a sum of consecutive naturals, namely, 237404 + 237405.

It is an arithmetic number, because the mean of its divisors is an integer number (237405).

2⁴⁷⁴⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

474809 is a deficient number, since it is larger than the sum of its proper divisors (1).

474809 is an equidigital number, since it uses as much as digits as its factorization.

474809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 474809 is about 689.0638577084. The cubic root of 474809 is about 78.0140781076.

The spelling of 474809 in words is "four hundred seventy-four thousand, eight hundred nine".