489077840 has 40 divisors (see below), whose sum is σ = 1167845640. Its totient is φ = 190342656.

The previous prime is 489077839. The next prime is 489077851. The reversal of 489077840 is 48770984.

It can be written as a sum of positive squares in 4 ways, for example, as 86192656 + 402885184 = 9284^2 + 20072^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79655 + ... + 85574.

It is an arithmetic number, because the mean of its divisors is an integer number (29196141).

Almost surely, 2^489077840 is an apocalyptic number.

489077840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

489077840 is an abundant number, since it is smaller than the sum of its proper divisors (678767800).

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

489077840 is a wasteful number, since it uses less digits than its factorization.

489077840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165279 (or 165273 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 489077840 is about 22115.1043406989. The cubic root of 489077840 is about 787.8786434774.

The spelling of 489077840 in words is "four hundred eighty-nine million, seventy-seven thousand, eight hundred forty".