489000509 has 2 divisors, whose sum is σ = 489000510. Its totient is φ = 489000508.

The previous prime is 489000503. The next prime is 489000527. The reversal of 489000509 is 905000984.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 301994884 + 187005625 = 17378^2 + 13675^2 .

It is a cyclic number.

It is not a de Polignac number, because 489000509 - 2¹⁶ = 488934973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489000503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244500254 + 244500255.

It is an arithmetic number, because the mean of its divisors is an integer number (244500255).

Almost surely, 2^489000509 is an apocalyptic number.

It is an amenable number.

489000509 is a deficient number, since it is larger than the sum of its proper divisors (1).

489000509 is an equidigital number, since it uses as much as digits as its factorization.

489000509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 489000509 is about 22113.3558963808. The cubic root of 489000509 is about 787.8371158991.

The spelling of 489000509 in words is "four hundred eighty-nine million, five hundred nine", and thus it is an aban number.