8480509 has 2 divisors, whose sum is σ = 8480510. Its totient is φ = 8480508.

The previous prime is 8480489. The next prime is 8480513. The reversal of 8480509 is 9050848.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7409284 + 1071225 = 2722^2 + 1035^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8480509 is a prime.

8480509 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8480599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4240254 + 4240255.

It is an arithmetic number, because the mean of its divisors is an integer number (4240255).

Almost surely, 2^8480509 is an apocalyptic number.

It is an amenable number.

8480509 is a deficient number, since it is larger than the sum of its proper divisors (1).

8480509 is an equidigital number, since it uses as much as digits as its factorization.

8480509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 8480509 is about 2912.1313500596. The cubic root of 8480509 is about 203.9266444573.

The spelling of 8480509 in words is "eight million, four hundred eighty thousand, five hundred nine".