248480209 has 2 divisors, whose sum is σ = 248480210. Its totient is φ = 248480208.

The previous prime is 248480189. The next prime is 248480227. The reversal of 248480209 is 902084842.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193126609 + 55353600 = 13897^2 + 7440^2 .

It is a cyclic number.

It is not a de Polignac number, because 248480209 - 2⁹ = 248479697 is a prime.

It is not a weakly prime, because it can be changed into another prime (248480249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124240104 + 124240105.

It is an arithmetic number, because the mean of its divisors is an integer number (124240105).

Almost surely, 2^248480209 is an apocalyptic number.

It is an amenable number.

248480209 is a deficient number, since it is larger than the sum of its proper divisors (1).

248480209 is an equidigital number, since it uses as much as digits as its factorization.

248480209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 248480209 is about 15763.2550255333. The cubic root of 248480209 is about 628.6813849529.

The spelling of 248480209 in words is "two hundred forty-eight million, four hundred eighty thousand, two hundred nine".