475208389 has 2 divisors, whose sum is σ = 475208390. Its totient is φ = 475208388.

The previous prime is 475208347. The next prime is 475208401. The reversal of 475208389 is 983802574.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 433347489 + 41860900 = 20817^2 + 6470^2 .

It is a cyclic number.

It is not a de Polignac number, because 475208389 - 2¹¹ = 475206341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (475208309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237604194 + 237604195.

It is an arithmetic number, because the mean of its divisors is an integer number (237604195).

Almost surely, 2^475208389 is an apocalyptic number.

It is an amenable number.

475208389 is a deficient number, since it is larger than the sum of its proper divisors (1).

475208389 is an equidigital number, since it uses as much as digits as its factorization.

475208389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 475208389 is about 21799.2749650074. The cubic root of 475208389 is about 780.3594601131.

The spelling of 475208389 in words is "four hundred seventy-five million, two hundred eight thousand, three hundred eighty-nine".