489121223 has 2 divisors, whose sum is σ = 489121224. Its totient is φ = 489121222.

The previous prime is 489121211. The next prime is 489121247. The reversal of 489121223 is 322121984.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 489121223 - 2¹⁴ = 489104839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 489121223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489121273) 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, 244560611 + 244560612.

It is an arithmetic number, because the mean of its divisors is an integer number (244560612).

Almost surely, 2^489121223 is an apocalyptic number.

489121223 is a deficient number, since it is larger than the sum of its proper divisors (1).

489121223 is an equidigital number, since it uses as much as digits as its factorization.

489121223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 32.

The square root of 489121223 is about 22116.0851644227. The cubic root of 489121223 is about 787.9019386980.

The spelling of 489121223 in words is "four hundred eighty-nine million, one hundred twenty-one thousand, two hundred twenty-three".