6889944780 has 96 divisors (see below), whose sum is σ = 21499558080. Its totient is φ = 1831818240.

The previous prime is 6889944779. The next prime is 6889944797. The reversal of 6889944780 is 874499886.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 163050 + ... + 200910.

It is an arithmetic number, because the mean of its divisors is an integer number (223953730).

Almost surely, 2^6889944780 is an apocalyptic number.

6889944780 is a gapful number since it is divisible by the number (60) 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 6889944780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10749779040).

6889944780 is an abundant number, since it is smaller than the sum of its proper divisors (14609613300).

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

6889944780 is a wasteful number, since it uses less digits than its factorization.

6889944780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38216 (or 38208 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 63.

The square root of 6889944780 is about 83005.6912506606. The cubic root of 6889944780 is about 1902.8530341546.

The spelling of 6889944780 in words is "six billion, eight hundred eighty-nine million, nine hundred forty-four thousand, seven hundred eighty".