459900809 has 2 divisors, whose sum is σ = 459900810. Its totient is φ = 459900808.

The previous prime is 459900743. The next prime is 459900823. The reversal of 459900809 is 908009954.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 421398784 + 38502025 = 20528^2 + 6205^2 .

It is a cyclic number.

It is not a de Polignac number, because 459900809 - 2¹⁶ = 459835273 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 459900809.

It is not a weakly prime, because it can be changed into another prime (459900829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 229950404 + 229950405.

It is an arithmetic number, because the mean of its divisors is an integer number (229950405).

Almost surely, 2^459900809 is an apocalyptic number.

It is an amenable number.

459900809 is a deficient number, since it is larger than the sum of its proper divisors (1).

459900809 is an equidigital number, since it uses as much as digits as its factorization.

459900809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 459900809 is about 21445.2980627456. The cubic root of 459900809 is about 771.8887734958. Note that the first 3 decimals are identical.

The spelling of 459900809 in words is "four hundred fifty-nine million, nine hundred thousand, eight hundred nine".