9885972 has 12 divisors (see below), whose sum is σ = 23067296. Its totient is φ = 3295320.

The previous prime is 9885913. The next prime is 9885979. The reversal of 9885972 is 2795889.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9885979) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 411904 + ... + 411927.

Almost surely, 2^9885972 is an apocalyptic number.

It is an amenable number.

9885972 is an abundant number, since it is smaller than the sum of its proper divisors (13181324).

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

9885972 is a wasteful number, since it uses less digits than its factorization.

9885972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823838 (or 823836 counting only the distinct ones).

The product of its digits is 362880, while the sum is 48.

The square root of 9885972 is about 3144.1965587412. The cubic root of 9885972 is about 214.6214503396.

The spelling of 9885972 in words is "nine million, eight hundred eighty-five thousand, nine hundred seventy-two".