489576649 has 4 divisors (see below), whose sum is σ = 490402836. Its totient is φ = 488750464.

The previous prime is 489576623. The next prime is 489576671. The reversal of 489576649 is 946675984.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 366033424 + 123543225 = 19132^2 + 11115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489576649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 489576593 and 489576602.

It is not an unprimeable number, because it can be changed into a prime (489576349) 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, 412204 + ... + 413389.

It is an arithmetic number, because the mean of its divisors is an integer number (122600709).

Almost surely, 2^489576649 is an apocalyptic number.

It is an amenable number.

489576649 is a deficient number, since it is larger than the sum of its proper divisors (826187).

489576649 is an equidigital number, since it uses as much as digits as its factorization.

489576649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826186.

The product of its digits is 13063680, while the sum is 58.

The square root of 489576649 is about 22126.3790304695. The cubic root of 489576649 is about 788.1464041451.

The spelling of 489576649 in words is "four hundred eighty-nine million, five hundred seventy-six thousand, six hundred forty-nine".