495909901 has 2 divisors, whose sum is σ = 495909902. Its totient is φ = 495909900.

The previous prime is 495909859. The next prime is 495909913. The reversal of 495909901 is 109909594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 468765801 + 27144100 = 21651^2 + 5210^2 .

It is a cyclic number.

It is not a de Polignac number, because 495909901 - 2⁹ = 495909389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (495909971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247954950 + 247954951.

It is an arithmetic number, because the mean of its divisors is an integer number (247954951).

Almost surely, 2^495909901 is an apocalyptic number.

It is an amenable number.

495909901 is a deficient number, since it is larger than the sum of its proper divisors (1).

495909901 is an equidigital number, since it uses as much as digits as its factorization.

495909901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131220, while the sum is 46.

The square root of 495909901 is about 22269.0345771881. The cubic root of 495909901 is about 791.5303886470.

The spelling of 495909901 in words is "four hundred ninety-five million, nine hundred nine thousand, nine hundred one".