489354689 has 2 divisors, whose sum is σ = 489354690. Its totient is φ = 489354688.

The previous prime is 489354661. The next prime is 489354743. The reversal of 489354689 is 986453984.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 479960464 + 9394225 = 21908^2 + 3065^2 .

It is a cyclic number.

It is not a de Polignac number, because 489354689 - 2²⁴ = 472577473 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (489354629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244677344 + 244677345.

It is an arithmetic number, because the mean of its divisors is an integer number (244677345).

Almost surely, 2^489354689 is an apocalyptic number.

It is an amenable number.

489354689 is a deficient number, since it is larger than the sum of its proper divisors (1).

489354689 is an equidigital number, since it uses as much as digits as its factorization.

489354689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7464960, while the sum is 56.

The square root of 489354689 is about 22121.3627292714. The cubic root of 489354689 is about 788.0272784883.

The spelling of 489354689 in words is "four hundred eighty-nine million, three hundred fifty-four thousand, six hundred eighty-nine".