489129685 has 16 divisors (see below), whose sum is σ = 648426240. Its totient is φ = 351224640.

The previous prime is 489129649. The next prime is 489129733. The reversal of 489129685 is 586921984.

It is not a de Polignac number, because 489129685 - 2¹⁷ = 488998613 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51942 + ... + 60631.

It is an arithmetic number, because the mean of its divisors is an integer number (40526640).

Almost surely, 2^489129685 is an apocalyptic number.

It is an amenable number.

489129685 is a deficient number, since it is larger than the sum of its proper divisors (159296555).

489129685 is a wasteful number, since it uses less digits than its factorization.

489129685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112668.

The product of its digits is 1244160, while the sum is 52.

The square root of 489129685 is about 22116.2764723178. The cubic root of 489129685 is about 787.9064823486.

The spelling of 489129685 in words is "four hundred eighty-nine million, one hundred twenty-nine thousand, six hundred eighty-five".