489870546257 has 4 divisors (see below), whose sum is σ = 490522838016. Its totient is φ = 489218254500.

The previous prime is 489870546203. The next prime is 489870546271. The reversal of 489870546257 is 752645078984.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 489870546257 - 2⁸ = 489870546001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 489870546193 and 489870546202.

It is not an unprimeable number, because it can be changed into a prime (489870546157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326144753 + ... + 326146254.

It is an arithmetic number, because the mean of its divisors is an integer number (122630709504).

Almost surely, 2^489870546257 is an apocalyptic number.

It is an amenable number.

489870546257 is a deficient number, since it is larger than the sum of its proper divisors (652291759).

489870546257 is an equidigital number, since it uses as much as digits as its factorization.

489870546257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652291758.

The product of its (nonzero) digits is 135475200, while the sum is 65.

The spelling of 489870546257 in words is "four hundred eighty-nine billion, eight hundred seventy million, five hundred forty-six thousand, two hundred fifty-seven".