489539038409 has 2 divisors, whose sum is σ = 489539038410. Its totient is φ = 489539038408.

The previous prime is 489539038381. The next prime is 489539038411. The reversal of 489539038409 is 904830935984.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 487164912784 + 2374125625 = 697972^2 + 48725^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489539038409 is a prime.

Together with 489539038411, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (489539038609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244769519204 + 244769519205.

It is an arithmetic number, because the mean of its divisors is an integer number (244769519205).

Almost surely, 2^489539038409 is an apocalyptic number.

It is an amenable number.

489539038409 is a deficient number, since it is larger than the sum of its proper divisors (1).

489539038409 is an equidigital number, since it uses as much as digits as its factorization.

489539038409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33592320, while the sum is 62.

The spelling of 489539038409 in words is "four hundred eighty-nine billion, five hundred thirty-nine million, thirty-eight thousand, four hundred nine".