475399913 has 2 divisors, whose sum is σ = 475399914. Its totient is φ = 475399912.

The previous prime is 475399891. The next prime is 475399921. The reversal of 475399913 is 319993574.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238486249 + 236913664 = 15443^2 + 15392^2 .

It is a cyclic number.

It is not a de Polignac number, because 475399913 - 2²⁰ = 474351337 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (475399943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237699956 + 237699957.

It is an arithmetic number, because the mean of its divisors is an integer number (237699957).

Almost surely, 2^475399913 is an apocalyptic number.

It is an amenable number.

475399913 is a deficient number, since it is larger than the sum of its proper divisors (1).

475399913 is an equidigital number, since it uses as much as digits as its factorization.

475399913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 918540, while the sum is 50.

The square root of 475399913 is about 21803.6674208721. The cubic root of 475399913 is about 780.4642825408.

The spelling of 475399913 in words is "four hundred seventy-five million, three hundred ninety-nine thousand, nine hundred thirteen".