489944997120 has 144 divisors (see below), whose sum is σ = 1565191135872. Its totient is φ = 130616156160.

The previous prime is 489944997107. The next prime is 489944997151. The reversal of 489944997120 is 21799449984.

It is a happy number.

It is a super-2 number, since 2×489944997120² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15855285 + ... + 15886155.

It is an arithmetic number, because the mean of its divisors is an integer number (10869382888).

Almost surely, 2^489944997120 is an apocalyptic number.

489944997120 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 489944997120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (782595567936).

489944997120 is an abundant number, since it is smaller than the sum of its proper divisors (1075246138752).

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

489944997120 is a wasteful number, since it uses less digits than its factorization.

489944997120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35028 (or 35014 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 66.

The spelling of 489944997120 in words is "four hundred eighty-nine billion, nine hundred forty-four million, nine hundred ninety-seven thousand, one hundred twenty".