459977509 has 2 divisors, whose sum is σ = 459977510. Its totient is φ = 459977508.

The previous prime is 459977459. The next prime is 459977521. The reversal of 459977509 is 905779954.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 252905409 + 207072100 = 15903^2 + 14390^2 .

It is a cyclic number.

It is not a de Polignac number, because 459977509 - 2²⁷ = 325759781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 459977509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (459977569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 229988754 + 229988755.

It is an arithmetic number, because the mean of its divisors is an integer number (229988755).

Almost surely, 2^459977509 is an apocalyptic number.

It is an amenable number.

459977509 is a deficient number, since it is larger than the sum of its proper divisors (1).

459977509 is an equidigital number, since it uses as much as digits as its factorization.

459977509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3572100, while the sum is 55.

The square root of 459977509 is about 21447.0862589770. The cubic root of 459977509 is about 771.9316817178.

The spelling of 459977509 in words is "four hundred fifty-nine million, nine hundred seventy-seven thousand, five hundred nine".