489969000 has 320 divisors, whose sum is σ = 1793975040. Its totient is φ = 124502400.

The previous prime is 489968971. The next prime is 489969001. The reversal of 489969000 is 969984.

It is a super-2 number, since 2×489969000² = 480139241922000000, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489969001) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1862869 + ... + 1863131.

It is an arithmetic number, because the mean of its divisors is an integer number (5606172).

Almost surely, 2^489969000 is an apocalyptic number.

489969000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489969000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (896987520).

489969000 is an abundant number, since it is smaller than the sum of its proper divisors (1304006040).

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

489969000 is a wasteful number, since it uses less digits than its factorization.

489969000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319 (or 296 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 489969000 is about 22135.2433914787. The cubic root of 489969000 is about 788.3568903960.

The spelling of 489969000 in words is "four hundred eighty-nine million, nine hundred sixty-nine thousand".