475908917 has 4 divisors (see below), whose sum is σ = 519173376. Its totient is φ = 432644460.

The previous prime is 475908883. The next prime is 475908943. The reversal of 475908917 is 719809574.

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 475908917 - 2⁸ = 475908661 is a prime.

It is a super-2 number, since 2×475908917² = 452978594560225778, 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 (475908317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21632213 + ... + 21632234.

It is an arithmetic number, because the mean of its divisors is an integer number (129793344).

Almost surely, 2^475908917 is an apocalyptic number.

It is an amenable number.

475908917 is a deficient number, since it is larger than the sum of its proper divisors (43264459).

475908917 is a wasteful number, since it uses less digits than its factorization.

475908917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43264458.

The product of its (nonzero) digits is 635040, while the sum is 50.

The square root of 475908917 is about 21815.3367381757. The cubic root of 475908917 is about 780.7427272320.

The spelling of 475908917 in words is "four hundred seventy-five million, nine hundred eight thousand, nine hundred seventeen".