495899609 has 2 divisors, whose sum is σ = 495899610. Its totient is φ = 495899608.

The previous prime is 495899587. The next prime is 495899611. The reversal of 495899609 is 906998594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 319408384 + 176491225 = 17872^2 + 13285^2 .

It is a cyclic number.

It is not a de Polignac number, because 495899609 - 2¹² = 495895513 is a prime.

Together with 495899611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (495899009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247949804 + 247949805.

It is an arithmetic number, because the mean of its divisors is an integer number (247949805).

Almost surely, 2^495899609 is an apocalyptic number.

It is an amenable number.

495899609 is a deficient number, since it is larger than the sum of its proper divisors (1).

495899609 is an equidigital number, since it uses as much as digits as its factorization.

495899609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6298560, while the sum is 59.

The square root of 495899609 is about 22268.8034927789. The cubic root of 495899609 is about 791.5249128626.

The spelling of 495899609 in words is "four hundred ninety-five million, eight hundred ninety-nine thousand, six hundred nine".