489086721 has 32 divisors (see below), whose sum is σ = 752640000. Its totient is φ = 313560720.

The previous prime is 489086701. The next prime is 489086723. The reversal of 489086721 is 127680984.

It is not a de Polignac number, because 489086721 - 2¹⁰ = 489085697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (489086723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138030 + ... + 141528.

It is an arithmetic number, because the mean of its divisors is an integer number (23520000).

Almost surely, 2^489086721 is an apocalyptic number.

It is an amenable number.

489086721 is a deficient number, since it is larger than the sum of its proper divisors (263553279).

489086721 is a wasteful number, since it uses less digits than its factorization.

489086721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3706 (or 3700 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 489086721 is about 22115.3051301582. The cubic root of 489086721 is about 787.8834123896.

The spelling of 489086721 in words is "four hundred eighty-nine million, eighty-six thousand, seven hundred twenty-one".