475117209 has 24 divisors (see below), whose sum is σ = 786377280. Its totient is φ = 270783648.

The previous prime is 475117199. The next prime is 475117229. The reversal of 475117209 is 902711574.

It is a happy number.

It is not a de Polignac number, because 475117209 - 2⁴ = 475117193 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (475117229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14814 + ... + 34200.

It is an arithmetic number, because the mean of its divisors is an integer number (32765720).

Almost surely, 2^475117209 is an apocalyptic number.

It is an amenable number.

475117209 is a deficient number, since it is larger than the sum of its proper divisors (311260071).

475117209 is a wasteful number, since it uses less digits than its factorization.

475117209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19789 (or 19786 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 475117209 is about 21797.1835107199. The cubic root of 475117209 is about 780.3095467639.

The spelling of 475117209 in words is "four hundred seventy-five million, one hundred seventeen thousand, two hundred nine".