9879860 has 12 divisors (see below), whose sum is σ = 20747748. Its totient is φ = 3951936.

The previous prime is 9879827. The next prime is 9879871. The reversal of 9879860 is 689789.

It can be written as a sum of positive squares in 2 ways, for example, as 6360484 + 3519376 = 2522^2 + 1876^2 .

It is a super-2 number, since 2×9879860² = 195223267239200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246977 + ... + 247016.

It is an arithmetic number, because the mean of its divisors is an integer number (1728979).

Almost surely, 2^9879860 is an apocalyptic number.

It is an amenable number.

9879860 is an abundant number, since it is smaller than the sum of its proper divisors (10867888).

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

9879860 is a wasteful number, since it uses less digits than its factorization.

9879860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494002 (or 494000 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 9879860 is about 3143.2244590547. The cubic root of 9879860 is about 214.5772113334.

The spelling of 9879860 in words is "nine million, eight hundred seventy-nine thousand, eight hundred sixty".