489451500856 has 16 divisors (see below), whose sum is σ = 932766180840. Its totient is φ = 240713852640.

The previous prime is 489451500847. The next prime is 489451500859. The reversal of 489451500856 is 658005154984.

It is a junction number, because it is equal to n+sod(n) for n = 489451500797 and 489451500806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489451500859) 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, 501486706 + ... + 501487681.

Almost surely, 2^489451500856 is an apocalyptic number.

It is an amenable number.

489451500856 is a deficient number, since it is larger than the sum of its proper divisors (443314679984).

489451500856 is a wasteful number, since it uses less digits than its factorization.

489451500856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002974454 (or 1002974450 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 55.

The spelling of 489451500856 in words is "four hundred eighty-nine billion, four hundred fifty-one million, five hundred thousand, eight hundred fifty-six".