485276809 has 2 divisors, whose sum is σ = 485276810. Its totient is φ = 485276808.

The previous prime is 485276791. The next prime is 485276843. The reversal of 485276809 is 908672584.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 484220025 + 1056784 = 22005^2 + 1028^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-485276809 is a prime.

It is not a weakly prime, because it can be changed into another prime (485273809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 242638404 + 242638405.

It is an arithmetic number, because the mean of its divisors is an integer number (242638405).

Almost surely, 2^485276809 is an apocalyptic number.

It is an amenable number.

485276809 is a deficient number, since it is larger than the sum of its proper divisors (1).

485276809 is an equidigital number, since it uses as much as digits as its factorization.

485276809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 49.

The square root of 485276809 is about 22028.9992736847. Note that the first 3 decimals coincide. The cubic root of 485276809 is about 785.8322459449.

The spelling of 485276809 in words is "four hundred eighty-five million, two hundred seventy-six thousand, eight hundred nine".