9879120 has 60 divisors (see below), whose sum is σ = 33179796. Its totient is φ = 2634240.

The previous prime is 9879101. The next prime is 9879131. The reversal of 9879120 is 219789.

It is a happy number.

9879120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2782224 + 7096896 = 1668^2 + 2664^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6141 + ... + 7580.

Almost surely, 2^9879120 is an apocalyptic number.

9879120 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9879120 is an abundant number, since it is smaller than the sum of its proper divisors (23300676).

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

9879120 is a wasteful number, since it uses less digits than its factorization.

9879120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13740 (or 13731 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 9879120 is about 3143.1067433353. The cubic root of 9879120 is about 214.5718539329.

It can be divided in two parts, 9879 and 120, that added together give a palindrome (9999).

The spelling of 9879120 in words is "nine million, eight hundred seventy-nine thousand, one hundred twenty".