495360209 has 2 divisors, whose sum is σ = 495360210. Its totient is φ = 495360208.

The previous prime is 495360179. The next prime is 495360211. The reversal of 495360209 is 902063594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 436684609 + 58675600 = 20897^2 + 7660^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-495360209 is a prime.

Together with 495360211, 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 (495360289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247680104 + 247680105.

It is an arithmetic number, because the mean of its divisors is an integer number (247680105).

Almost surely, 2^495360209 is an apocalyptic number.

It is an amenable number.

495360209 is a deficient number, since it is larger than the sum of its proper divisors (1).

495360209 is an equidigital number, since it uses as much as digits as its factorization.

495360209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 495360209 is about 22256.6890844079. The cubic root of 495360209 is about 791.2378228790.

The spelling of 495360209 in words is "four hundred ninety-five million, three hundred sixty thousand, two hundred nine".