475909 has 4 divisors (see below), whose sum is σ = 543904. Its totient is φ = 407916.

The previous prime is 475907. The next prime is 475921. The reversal of 475909 is 909574.

475909 is nontrivially palindromic in base 6.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 475909 - 2¹ = 475907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (475903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33987 + ... + 34000.

It is an arithmetic number, because the mean of its divisors is an integer number (135976).

2⁴⁷⁵⁹⁰⁹ is an apocalyptic number.

It is an amenable number.

475909 is a deficient number, since it is larger than the sum of its proper divisors (67995).

475909 is an equidigital number, since it uses as much as digits as its factorization.

475909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67994.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 475909 is about 689.8615803188. The cubic root of 475909 is about 78.0742772620.

The spelling of 475909 in words is "four hundred seventy-five thousand, nine hundred nine".