475209667 has 4 divisors (see below), whose sum is σ = 475489440. Its totient is φ = 474929896.

The previous prime is 475209661. The next prime is 475209671. The reversal of 475209667 is 766902574.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 766902574 = 2 ⋅383451287.

It is a cyclic number.

It is not a de Polignac number, because 475209667 - 2²³ = 466821059 is a prime.

It is a super-2 number, since 2×475209667² = 451648455220501778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (475209661) 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, 137323 + ... + 140740.

It is an arithmetic number, because the mean of its divisors is an integer number (118872360).

Almost surely, 2^475209667 is an apocalyptic number.

475209667 is a deficient number, since it is larger than the sum of its proper divisors (279773).

475209667 is a wasteful number, since it uses less digits than its factorization.

475209667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279772.

The product of its (nonzero) digits is 635040, while the sum is 46.

The square root of 475209667 is about 21799.3042778892. The cubic root of 475209667 is about 780.3601596648.

The spelling of 475209667 in words is "four hundred seventy-five million, two hundred nine thousand, six hundred sixty-seven".