489906321408 has 432 divisors, whose sum is σ = 1732639545000. Its totient is φ = 132601577472.

The previous prime is 489906321403. The next prime is 489906321449. The reversal of 489906321408 is 804123609984.

489906321408 is a `hidden beast` number, since 489 + 90 + 6 + 32 + 1 + 40 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489906321403) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 17145918 + ... + 17174466.

Almost surely, 2^489906321408 is an apocalyptic number.

489906321408 is a gapful number since it is divisible by the number (48) 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 489906321408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (866319772500).

489906321408 is an abundant number, since it is smaller than the sum of its proper divisors (1242733223592).

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

489906321408 is a wasteful number, since it uses less digits than its factorization.

489906321408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28610 (or 28580 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 489906321408 in words is "four hundred eighty-nine billion, nine hundred six million, three hundred twenty-one thousand, four hundred eight".