489646840 has 16 divisors (see below), whose sum is σ = 1101705480. Its totient is φ = 195858720.

The previous prime is 489646831. The next prime is 489646847. The reversal of 489646840 is 48646984.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489646847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6120546 + ... + 6120625.

Almost surely, 2^489646840 is an apocalyptic number.

489646840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

489646840 is an abundant number, since it is smaller than the sum of its proper divisors (612058640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

489646840 is a wasteful number, since it uses less digits than its factorization.

489646840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12241182 (or 12241178 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 49.

The square root of 489646840 is about 22127.9651120477. The cubic root of 489646840 is about 788.1840680743.

The spelling of 489646840 in words is "four hundred eighty-nine million, six hundred forty-six thousand, eight hundred forty".