489685797 has 8 divisors (see below), whose sum is σ = 725460480. Its totient is φ = 326457180.

The previous prime is 489685789. The next prime is 489685811. The reversal of 489685797 is 797586984.

489685797 is a `hidden beast` number, since 489 + 6 + 85 + 79 + 7 = 666.

It is not a de Polignac number, because 489685797 - 2³ = 489685789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489685747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9068229 + ... + 9068282.

It is an arithmetic number, because the mean of its divisors is an integer number (90682560).

Almost surely, 2^489685797 is an apocalyptic number.

It is an amenable number.

489685797 is a deficient number, since it is larger than the sum of its proper divisors (235774683).

489685797 is a wasteful number, since it uses less digits than its factorization.

489685797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18136520 (or 18136514 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 63.

The square root of 489685797 is about 22128.8453607503. The cubic root of 489685797 is about 788.2049705356.

The spelling of 489685797 in words is "four hundred eighty-nine million, six hundred eighty-five thousand, seven hundred ninety-seven".