9859956 has 12 divisors (see below), whose sum is σ = 23006592. Its totient is φ = 3286648.

The previous prime is 9859937. The next prime is 9859957. The reversal of 9859956 is 6599589.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 9859899 and 9859908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9859957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410820 + ... + 410843.

It is an arithmetic number, because the mean of its divisors is an integer number (1917216).

Almost surely, 2^9859956 is an apocalyptic number.

It is an amenable number.

9859956 is an abundant number, since it is smaller than the sum of its proper divisors (13146636).

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

9859956 is a wasteful number, since it uses less digits than its factorization.

9859956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821670 (or 821668 counting only the distinct ones).

The product of its digits is 874800, while the sum is 51.

The square root of 9859956 is about 3140.0566873864. The cubic root of 9859956 is about 214.4330184631.

The spelling of 9859956 in words is "nine million, eight hundred fifty-nine thousand, nine hundred fifty-six".