489388720123 has 2 divisors, whose sum is σ = 489388720124. Its totient is φ = 489388720122.

The previous prime is 489388720099. The next prime is 489388720133. The reversal of 489388720123 is 321027883984.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489388720123 is a prime.

It is not a weakly prime, because it can be changed into another prime (489388720133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244694360061 + 244694360062.

It is an arithmetic number, because the mean of its divisors is an integer number (244694360062).

Almost surely, 2^489388720123 is an apocalyptic number.

489388720123 is a deficient number, since it is larger than the sum of its proper divisors (1).

489388720123 is an equidigital number, since it uses as much as digits as its factorization.

489388720123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 489388720123 in words is "four hundred eighty-nine billion, three hundred eighty-eight million, seven hundred twenty thousand, one hundred twenty-three".