489502999440 has 640 divisors, whose sum is σ = 2184393523200. Its totient is φ = 97843230720.

The previous prime is 489502999399. The next prime is 489502999471. The reversal of 489502999440 is 44999205984.

489502999440 is a `hidden beast` number, since 4 + 89 + 5 + 0 + 29 + 99 + 440 = 666.

It is a super-2 number, since 2×489502999440² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3669105 + ... + 3800175.

It is an arithmetic number, because the mean of its divisors is an integer number (3413114880).

Almost surely, 2^489502999440 is an apocalyptic number.

489502999440 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 489502999440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1092196761600).

489502999440 is an abundant number, since it is smaller than the sum of its proper divisors (1694890523760).

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

489502999440 is a wasteful number, since it uses less digits than its factorization.

489502999440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131132 (or 131120 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 63.

The spelling of 489502999440 in words is "four hundred eighty-nine billion, five hundred two million, nine hundred ninety-nine thousand, four hundred forty".