489104721 has 72 divisors (see below), whose sum is σ = 846518400. Its totient is φ = 271252800.

The previous prime is 489104713. The next prime is 489104767. The reversal of 489104721 is 127401984.

489104721 is a `hidden beast` number, since 489 + 104 + 72 + 1 = 666.

It is not a de Polignac number, because 489104721 - 2³ = 489104713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (489104711) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3518670 + ... + 3518808.

It is an arithmetic number, because the mean of its divisors is an integer number (11757200).

Almost surely, 2^489104721 is an apocalyptic number.

It is an amenable number.

489104721 is a deficient number, since it is larger than the sum of its proper divisors (357413679).

489104721 is a wasteful number, since it uses less digits than its factorization.

489104721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 489104721 is about 22115.7120843983. The cubic root of 489104721 is about 787.8930778380.

The spelling of 489104721 in words is "four hundred eighty-nine million, one hundred four thousand, seven hundred twenty-one".