489885388609 has 4 divisors (see below), whose sum is σ = 489891592404. Its totient is φ = 489879184816.

The previous prime is 489885388513. The next prime is 489885388637. The reversal of 489885388609 is 906883588984.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 295517268225 + 194368120384 = 543615^2 + 440872^2 .

It is a cyclic number.

It is not a de Polignac number, because 489885388609 - 2³⁵ = 455525650241 is a prime.

It is a Smith number, since the sum of its digits (76) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489885388649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2981902 + ... + 3141895.

It is an arithmetic number, because the mean of its divisors is an integer number (122472898101).

Almost surely, 2^489885388609 is an apocalyptic number.

It is an amenable number.

489885388609 is a deficient number, since it is larger than the sum of its proper divisors (6203795).

489885388609 is an equidigital number, since it uses as much as digits as its factorization.

489885388609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6203794.

The product of its (nonzero) digits is 955514880, while the sum is 76.

The spelling of 489885388609 in words is "four hundred eighty-nine billion, eight hundred eighty-five million, three hundred eighty-eight thousand, six hundred nine".