490760909 has 2 divisors, whose sum is σ = 490760910. Its totient is φ = 490760908.

The previous prime is 490760903. The next prime is 490760911. The reversal of 490760909 is 909067094.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 438776809 + 51984100 = 20947^2 + 7210^2 .

It is a cyclic number.

It is not a de Polignac number, because 490760909 - 2⁸ = 490760653 is a prime.

Together with 490760911, it forms a pair of twin primes.

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 490760909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (490760903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245380454 + 245380455.

It is an arithmetic number, because the mean of its divisors is an integer number (245380455).

Almost surely, 2^490760909 is an apocalyptic number.

It is an amenable number.

490760909 is a deficient number, since it is larger than the sum of its proper divisors (1).

490760909 is an equidigital number, since it uses as much as digits as its factorization.

490760909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 490760909 is about 22153.1241363380. The cubic root of 490760909 is about 788.7813872345.

The spelling of 490760909 in words is "four hundred ninety million, seven hundred sixty thousand, nine hundred nine".