489315897 has 20 divisors (see below), whose sum is σ = 835376256. Its totient is φ = 279608760.

The previous prime is 489315881. The next prime is 489315899. The reversal of 489315897 is 798513984.

489315897 is a `hidden beast` number, since 489 + 3 + 158 + 9 + 7 = 666.

It is not a de Polignac number, because 489315897 - 2⁴ = 489315881 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (489315899) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 430929 + ... + 432062.

Almost surely, 2^489315897 is an apocalyptic number.

It is an amenable number.

489315897 is a deficient number, since it is larger than the sum of its proper divisors (346060359).

489315897 is an equidigital number, since it uses as much as digits as its factorization.

489315897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863010 (or 863001 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 489315897 is about 22120.4859123845. The cubic root of 489315897 is about 788.0064551723.

The spelling of 489315897 in words is "four hundred eighty-nine million, three hundred fifteen thousand, eight hundred ninety-seven".