9955872 has 120 divisors (see below), whose sum is σ = 30735936. Its totient is φ = 3155328.

The previous prime is 9955853. The next prime is 9955901. The reversal of 9955872 is 2785599.

It is a happy number.

9955872 is a `hidden beast` number, since 99 + 558 + 7 + 2 = 666.

It is a nialpdrome in base 6.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 59533 + ... + 59699.

Almost surely, 2^9955872 is an apocalyptic number.

9955872 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9955872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15367968).

9955872 is an abundant number, since it is smaller than the sum of its proper divisors (20780064).

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

9955872 is a wasteful number, since it uses less digits than its factorization.

9955872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212 (or 195 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The square root of 9955872 is about 3155.2926964071. The cubic root of 9955872 is about 215.1260987339.

The spelling of 9955872 in words is "nine million, nine hundred fifty-five thousand, eight hundred seventy-two".