9779880 has 128 divisors (see below), whose sum is σ = 33177600. Its totient is φ = 2284800.

The previous prime is 9779857. The next prime is 9779881. The reversal of 9779880 is 889779.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9779881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40801 + ... + 41039.

It is an arithmetic number, because the mean of its divisors is an integer number (259200).

Almost surely, 2^9779880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9779880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16588800).

9779880 is an abundant number, since it is smaller than the sum of its proper divisors (23397720).

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

9779880 is a wasteful number, since it uses less digits than its factorization.

9779880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 48.

The square root of 9779880 is about 3127.2799682791. The cubic root of 9779880 is about 213.8509457878.

The spelling of 9779880 in words is "nine million, seven hundred seventy-nine thousand, eight hundred eighty".