475320809 has 2 divisors, whose sum is σ = 475320810. Its totient is φ = 475320808.

The previous prime is 475320767. The next prime is 475320851. The reversal of 475320809 is 908023574.

It is a balanced prime because it is at equal distance from previous prime (475320767) and next prime (475320851).

It can be written as a sum of positive squares in only one way, i.e., 475109209 + 211600 = 21797^2 + 460^2 .

It is a cyclic number.

It is not a de Polignac number, because 475320809 - 2²⁰ = 474272233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (475320869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237660404 + 237660405.

It is an arithmetic number, because the mean of its divisors is an integer number (237660405).

Almost surely, 2^475320809 is an apocalyptic number.

It is an amenable number.

475320809 is a deficient number, since it is larger than the sum of its proper divisors (1).

475320809 is an equidigital number, since it uses as much as digits as its factorization.

475320809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 475320809 is about 21801.8533386499. The cubic root of 475320809 is about 780.4209917804.

The spelling of 475320809 in words is "four hundred seventy-five million, three hundred twenty thousand, eight hundred nine".