489273289 has 2 divisors, whose sum is σ = 489273290. Its totient is φ = 489273288.

The previous prime is 489273271. The next prime is 489273293. The reversal of 489273289 is 982372984.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 408363264 + 80910025 = 20208^2 + 8995^2 .

It is a cyclic number.

It is not a de Polignac number, because 489273289 - 2²³ = 480884681 is a prime.

It is not a weakly prime, because it can be changed into another prime (489273689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244636644 + 244636645.

It is an arithmetic number, because the mean of its divisors is an integer number (244636645).

Almost surely, 2^489273289 is an apocalyptic number.

It is an amenable number.

489273289 is a deficient number, since it is larger than the sum of its proper divisors (1).

489273289 is an equidigital number, since it uses as much as digits as its factorization.

489273289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 52.

The square root of 489273289 is about 22119.5228022668. The cubic root of 489273289 is about 787.9835821818.

The spelling of 489273289 in words is "four hundred eighty-nine million, two hundred seventy-three thousand, two hundred eighty-nine".