489647897 has 8 divisors (see below), whose sum is σ = 513764160. Its totient is φ = 465767280.

The previous prime is 489647891. The next prime is 489647909. The reversal of 489647897 is 798746984.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 489647897 - 2⁴ = 489647881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489647891) 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, 54647 + ... + 62972.

It is an arithmetic number, because the mean of its divisors is an integer number (64220520).

Almost surely, 2^489647897 is an apocalyptic number.

It is an amenable number.

489647897 is a deficient number, since it is larger than the sum of its proper divisors (24116263).

489647897 is a wasteful number, since it uses less digits than its factorization.

489647897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117823.

The product of its digits is 24385536, while the sum is 62.

The square root of 489647897 is about 22127.9889958396. The cubic root of 489647897 is about 788.1846352245.

The spelling of 489647897 in words is "four hundred eighty-nine million, six hundred forty-seven thousand, eight hundred ninety-seven".