495490609 has 2 divisors, whose sum is σ = 495490610. Its totient is φ = 495490608.

The previous prime is 495490579. The next prime is 495490621. The reversal of 495490609 is 906094594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 467770384 + 27720225 = 21628^2 + 5265^2 .

It is a cyclic number.

It is not a de Polignac number, because 495490609 - 2⁹ = 495490097 is a prime.

It is not a weakly prime, because it can be changed into another prime (495490409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247745304 + 247745305.

It is an arithmetic number, because the mean of its divisors is an integer number (247745305).

Almost surely, 2^495490609 is an apocalyptic number.

It is an amenable number.

495490609 is a deficient number, since it is larger than the sum of its proper divisors (1).

495490609 is an equidigital number, since it uses as much as digits as its factorization.

495490609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 495490609 is about 22259.6183480310. The cubic root of 495490609 is about 791.3072460032.

The spelling of 495490609 in words is "four hundred ninety-five million, four hundred ninety thousand, six hundred nine".