9879750 has 48 divisors (see below), whose sum is σ = 26720928. Its totient is φ = 2634000.

The previous prime is 9879697. The next prime is 9879757. The reversal of 9879750 is 579789.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9879696 and 9879705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9879757) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55 + ... + 4445.

It is an arithmetic number, because the mean of its divisors is an integer number (556686).

Almost surely, 2^9879750 is an apocalyptic number.

9879750 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 9879750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13360464).

9879750 is an abundant number, since it is smaller than the sum of its proper divisors (16841178).

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

9879750 is a wasteful number, since it uses less digits than its factorization.

9879750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4414 (or 4401 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The square root of 9879750 is about 3143.2069610511. The cubic root of 9879750 is about 214.5764149800.

The spelling of 9879750 in words is "nine million, eight hundred seventy-nine thousand, seven hundred fifty".