475523869 has 2 divisors, whose sum is σ = 475523870. Its totient is φ = 475523868.

The previous prime is 475523837. The next prime is 475523891. The reversal of 475523869 is 968325574.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 270174969 + 205348900 = 16437^2 + 14330^2 .

It is a cyclic number.

It is not a de Polignac number, because 475523869 - 2⁵ = 475523837 is a prime.

It is a super-2 number, since 2×475523869² = 452245899977458322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (475523809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237761934 + 237761935.

It is an arithmetic number, because the mean of its divisors is an integer number (237761935).

Almost surely, 2^475523869 is an apocalyptic number.

It is an amenable number.

475523869 is a deficient number, since it is larger than the sum of its proper divisors (1).

475523869 is an equidigital number, since it uses as much as digits as its factorization.

475523869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1814400, while the sum is 49.

The square root of 475523869 is about 21806.5097849243. The cubic root of 475523869 is about 780.5321095225.

The spelling of 475523869 in words is "four hundred seventy-five million, five hundred twenty-three thousand, eight hundred sixty-nine".