475108809 has 32 divisors (see below), whose sum is σ = 779164416. Its totient is φ = 251320320.

The previous prime is 475108807. The next prime is 475108831. The reversal of 475108809 is 908801574.

It is not a de Polignac number, because 475108809 - 2¹ = 475108807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (475108807) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10869 + ... + 32685.

It is an arithmetic number, because the mean of its divisors is an integer number (24348888).

Almost surely, 2^475108809 is an apocalyptic number.

It is an amenable number.

475108809 is a deficient number, since it is larger than the sum of its proper divisors (304055607).

475108809 is a wasteful number, since it uses less digits than its factorization.

475108809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21905.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 475108809 is about 21796.9908244234. The cubic root of 475108809 is about 780.3049481521.

The spelling of 475108809 in words is "four hundred seventy-five million, one hundred eight thousand, eight hundred nine".