489756646 has 16 divisors (see below), whose sum is σ = 740426544. Its totient is φ = 242953344.

The previous prime is 489756643. The next prime is 489756653. The reversal of 489756646 is 646657984.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489756643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278506 + ... + 280258.

It is an arithmetic number, because the mean of its divisors is an integer number (46276659).

Almost surely, 2^489756646 is an apocalyptic number.

489756646 is a deficient number, since it is larger than the sum of its proper divisors (250669898).

489756646 is a wasteful number, since it uses less digits than its factorization.

489756646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2775.

The product of its digits is 8709120, while the sum is 55.

The square root of 489756646 is about 22130.4461319694. The cubic root of 489756646 is about 788.2429818763.

The spelling of 489756646 in words is "four hundred eighty-nine million, seven hundred fifty-six thousand, six hundred forty-six".