495055909 has 2 divisors, whose sum is σ = 495055910. Its totient is φ = 495055908.

The previous prime is 495055889. The next prime is 495055921. The reversal of 495055909 is 909550594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 272151009 + 222904900 = 16497^2 + 14930^2 .

It is a cyclic number.

It is not a de Polignac number, because 495055909 - 2⁵ = 495055877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (495055009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247527954 + 247527955.

It is an arithmetic number, because the mean of its divisors is an integer number (247527955).

Almost surely, 2^495055909 is an apocalyptic number.

It is an amenable number.

495055909 is a deficient number, since it is larger than the sum of its proper divisors (1).

495055909 is an equidigital number, since it uses as much as digits as its factorization.

495055909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 364500, while the sum is 46.

The square root of 495055909 is about 22249.8518871475. The cubic root of 495055909 is about 791.0757704410.

The spelling of 495055909 in words is "four hundred ninety-five million, fifty-five thousand, nine hundred nine".