471456809 has 2 divisors, whose sum is σ = 471456810. Its totient is φ = 471456808.

The previous prime is 471456779. The next prime is 471456847. The reversal of 471456809 is 908654174.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 414000409 + 57456400 = 20347^2 + 7580^2 .

It is a cyclic number.

It is not a de Polignac number, because 471456809 - 2²⁸ = 203021353 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 471456809.

It is not a weakly prime, because it can be changed into another prime (476456809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235728404 + 235728405.

It is an arithmetic number, because the mean of its divisors is an integer number (235728405).

Almost surely, 2^471456809 is an apocalyptic number.

It is an amenable number.

471456809 is a deficient number, since it is larger than the sum of its proper divisors (1).

471456809 is an equidigital number, since it uses as much as digits as its factorization.

471456809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 471456809 is about 21713.0561874647. The cubic root of 471456809 is about 778.3004904725.

The spelling of 471456809 in words is "four hundred seventy-one million, four hundred fifty-six thousand, eight hundred nine".