489107209 has 2 divisors, whose sum is σ = 489107210. Its totient is φ = 489107208.

The previous prime is 489107197. The next prime is 489107219. The reversal of 489107209 is 902701984.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 274631184 + 214476025 = 16572^2 + 14645^2 .

It is a cyclic number.

It is not a de Polignac number, because 489107209 - 2¹¹ = 489105161 is a prime.

It is not a weakly prime, because it can be changed into another prime (489107219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244553604 + 244553605.

It is an arithmetic number, because the mean of its divisors is an integer number (244553605).

Almost surely, 2^489107209 is an apocalyptic number.

It is an amenable number.

489107209 is a deficient number, since it is larger than the sum of its proper divisors (1).

489107209 is an equidigital number, since it uses as much as digits as its factorization.

489107209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 489107209 is about 22115.7683339286. The cubic root of 489107209 is about 787.8944137991.

The spelling of 489107209 in words is "four hundred eighty-nine million, one hundred seven thousand, two hundred nine".