489994530 has 64 divisors (see below), whose sum is σ = 1239936768. Its totient is φ = 123678720.

The previous prime is 489994523. The next prime is 489994537. The reversal of 489994530 is 35499984.

It is an interprime number because it is at equal distance from previous prime (489994523) and next prime (489994537).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (489994537) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63270 + ... + 70590.

It is an arithmetic number, because the mean of its divisors is an integer number (19374012).

Almost surely, 2^489994530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489994530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (619968384).

489994530 is an abundant number, since it is smaller than the sum of its proper divisors (749942238).

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

489994530 is a wasteful number, since it uses less digits than its factorization.

489994530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7451.

The product of its (nonzero) digits is 1399680, while the sum is 51.

The square root of 489994530 is about 22135.8200661281. The cubic root of 489994530 is about 788.3705826920.

The spelling of 489994530 in words is "four hundred eighty-nine million, nine hundred ninety-four thousand, five hundred thirty".