489589871 has 2 divisors, whose sum is σ = 489589872. Its totient is φ = 489589870.

The previous prime is 489589829. The next prime is 489589879. The reversal of 489589871 is 178985984.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489589871 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 489589871.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489589879) 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, 244794935 + 244794936.

It is an arithmetic number, because the mean of its divisors is an integer number (244794936).

Almost surely, 2^489589871 is an apocalyptic number.

489589871 is a deficient number, since it is larger than the sum of its proper divisors (1).

489589871 is an equidigital number, since it uses as much as digits as its factorization.

489589871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5806080, while the sum is 59.

The square root of 489589871 is about 22126.6778120892. The cubic root of 489589871 is about 788.1534992397.

The spelling of 489589871 in words is "four hundred eighty-nine million, five hundred eighty-nine thousand, eight hundred seventy-one".