489670256873 has 4 divisors (see below), whose sum is σ = 559623150720. Its totient is φ = 419717363028.

The previous prime is 489670256863. The next prime is 489670256891. The reversal of 489670256873 is 378652076984.

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 489670256873 - 2⁶ = 489670256809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489670256863) 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, 34976446913 + ... + 34976446926.

It is an arithmetic number, because the mean of its divisors is an integer number (139905787680).

Almost surely, 2^489670256873 is an apocalyptic number.

It is an amenable number.

489670256873 is a deficient number, since it is larger than the sum of its proper divisors (69952893847).

489670256873 is an equidigital number, since it uses as much as digits as its factorization.

489670256873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69952893846.

The product of its (nonzero) digits is 121927680, while the sum is 65.

The spelling of 489670256873 in words is "four hundred eighty-nine billion, six hundred seventy million, two hundred fifty-six thousand, eight hundred seventy-three".