475908913 has 4 divisors (see below), whose sum is σ = 476114548. Its totient is φ = 475703280.

The previous prime is 475908883. The next prime is 475908943. The reversal of 475908913 is 319809574.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (475908883) and next prime (475908943).

It can be written as a sum of positive squares in 2 ways, for example, as 343842849 + 132066064 = 18543^2 + 11492^2 .

It is a cyclic number.

It is not a de Polignac number, because 475908913 - 2⁹ = 475908401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (475908943) 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, 99306 + ... + 103987.

It is an arithmetic number, because the mean of its divisors is an integer number (119028637).

Almost surely, 2^475908913 is an apocalyptic number.

It is an amenable number.

475908913 is a deficient number, since it is larger than the sum of its proper divisors (205635).

475908913 is a wasteful number, since it uses less digits than its factorization.

475908913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205634.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 475908913 is about 21815.3366464971. The cubic root of 475908913 is about 780.7427250447.

The spelling of 475908913 in words is "four hundred seventy-five million, nine hundred eight thousand, nine hundred thirteen".