475469109 has 18 divisors (see below), whose sum is σ = 713177270. Its totient is φ = 316975032.

The previous prime is 475469089. The next prime is 475469117. The reversal of 475469109 is 901964574.

It can be written as a sum of positive squares in only one way, i.e., 303282225 + 172186884 = 17415^2 + 13122^2 .

It is not a de Polignac number, because 475469109 - 2⁸ = 475468853 is a prime.

It is a super-2 number, since 2×475469109² = 452141747226507762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (475469119) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 29674 + ... + 42795.

Almost surely, 2^475469109 is an apocalyptic number.

It is an amenable number.

475469109 is a deficient number, since it is larger than the sum of its proper divisors (237708161).

475469109 is an frugal number, since it uses more digits than its factorization.

475469109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72493 (or 72472 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 475469109 is about 21805.2541604082. The cubic root of 475469109 is about 780.5021470734.

The spelling of 475469109 in words is "four hundred seventy-five million, four hundred sixty-nine thousand, one hundred nine".