489298309 has 2 divisors, whose sum is σ = 489298310. Its totient is φ = 489298308.

The previous prime is 489298291. The next prime is 489298331. The reversal of 489298309 is 903892984.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 428614209 + 60684100 = 20703^2 + 7790^2 .

It is a cyclic number.

It is not a de Polignac number, because 489298309 - 2⁷ = 489298181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489298379) 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, 244649154 + 244649155.

It is an arithmetic number, because the mean of its divisors is an integer number (244649155).

Almost surely, 2^489298309 is an apocalyptic number.

It is an amenable number.

489298309 is a deficient number, since it is larger than the sum of its proper divisors (1).

489298309 is an equidigital number, since it uses as much as digits as its factorization.

489298309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1119744, while the sum is 52.

The square root of 489298309 is about 22120.0883587747. The cubic root of 489298309 is about 787.9970136754.

The spelling of 489298309 in words is "four hundred eighty-nine million, two hundred ninety-eight thousand, three hundred nine".