489041721 has 24 divisors (see below), whose sum is σ = 824488704. Its totient is φ = 273504960.

The previous prime is 489041719. The next prime is 489041723. The reversal of 489041721 is 127140984.

489041721 is a `hidden beast` number, since 489 + 0 + 4 + 172 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (489041719) and next prime (489041723).

It is not a de Polignac number, because 489041721 - 2¹ = 489041719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (489041723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79620 + ... + 85541.

It is an arithmetic number, because the mean of its divisors is an integer number (34353696).

Almost surely, 2^489041721 is an apocalyptic number.

It is an amenable number.

489041721 is a deficient number, since it is larger than the sum of its proper divisors (335446983).

489041721 is a wasteful number, since it uses less digits than its factorization.

489041721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165221 (or 165218 counting only the distinct ones).

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

The square root of 489041721 is about 22114.2877117939. The cubic root of 489041721 is about 787.8592477309.

It can be divided in two parts, 48904 and 1721, that added together give a 4-th power (50625 = 15⁴).

The spelling of 489041721 in words is "four hundred eighty-nine million, forty-one thousand, seven hundred twenty-one".