489017919509 has 12 divisors (see below), whose sum is σ = 568879527744. Its totient is φ = 419142044664.

The previous prime is 489017919493. The next prime is 489017919517. The reversal of 489017919509 is 905919710984.

It is not a de Polignac number, because 489017919509 - 2⁴ = 489017919493 is a prime.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489017919409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1190852 + ... + 1547954.

It is an arithmetic number, because the mean of its divisors is an integer number (47406627312).

Almost surely, 2^489017919509 is an apocalyptic number.

489017919509 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

489017919509 is a deficient number, since it is larger than the sum of its proper divisors (79861608235).

489017919509 is a wasteful number, since it uses less digits than its factorization.

489017919509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385064 (or 385057 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 62.

The spelling of 489017919509 in words is "four hundred eighty-nine billion, seventeen million, nine hundred nineteen thousand, five hundred nine".