489834540 has 144 divisors (see below), whose sum is σ = 1659604128. Its totient is φ = 120559104.

The previous prime is 489834539. The next prime is 489834557. The reversal of 489834540 is 45438984.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59304 + ... + 67056.

Almost surely, 2^489834540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489834540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (829802064).

489834540 is an abundant number, since it is smaller than the sum of its proper divisors (1169769588).

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

489834540 is a wasteful number, since it uses less digits than its factorization.

489834540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7790 (or 7776 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 489834540 is about 22132.2059451831. The cubic root of 489834540 is about 788.2847687137.

The spelling of 489834540 in words is "four hundred eighty-nine million, eight hundred thirty-four thousand, five hundred forty".