789439861980 has 2592 divisors, whose sum is σ = 3595532129280. Its totient is φ = 136492646400.

The previous prime is 789439861933. The next prime is 789439861981. The reversal of 789439861980 is 89168934987.

789439861980 is a `hidden beast` number, since 7 + 8 + 94 + 398 + 61 + 98 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 789439861899 and 789439861908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (789439861981) by changing a digit.

It is a polite number, since it can be written in 863 ways as a sum of consecutive naturals, for example, 19254630760 + ... + 19254630800.

Almost surely, 2^789439861980 is an apocalyptic number.

789439861980 is a gapful number since it is divisible by the number (70) 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 789439861980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1797766064640).

789439861980 is an abundant number, since it is smaller than the sum of its proper divisors (2806092267300).

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

789439861980 is a wasteful number, since it uses less digits than its factorization.

789439861980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 188116992, while the sum is 72.

The spelling of 789439861980 in words is "seven hundred eighty-nine billion, four hundred thirty-nine million, eight hundred sixty-one thousand, nine hundred eighty".