489459889 has 2 divisors, whose sum is σ = 489459890. Its totient is φ = 489459888.

The previous prime is 489459877. The next prime is 489459907. The reversal of 489459889 is 988954984.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 361950625 + 127509264 = 19025^2 + 11292^2 .

It is a cyclic number.

It is not a de Polignac number, because 489459889 - 2¹⁷ = 489328817 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 489459889.

It is not a weakly prime, because it can be changed into another prime (489459689) 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, 244729944 + 244729945.

It is an arithmetic number, because the mean of its divisors is an integer number (244729945).

Almost surely, 2^489459889 is an apocalyptic number.

It is an amenable number.

489459889 is a deficient number, since it is larger than the sum of its proper divisors (1).

489459889 is an equidigital number, since it uses as much as digits as its factorization.

489459889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29859840, while the sum is 64.

The square root of 489459889 is about 22123.7403935230. The cubic root of 489459889 is about 788.0837436874.

The spelling of 489459889 in words is "four hundred eighty-nine million, four hundred fifty-nine thousand, eight hundred eighty-nine".