9871392 has 72 divisors (see below), whose sum is σ = 27025488. Its totient is φ = 3154560.

The previous prime is 9871391. The next prime is 9871403. The reversal of 9871392 is 2931789.

It is a self number, because there is not a number n which added to its sum of digits gives 9871392.

It is not an unprimeable number, because it can be changed into a prime (9871391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92203 + ... + 92309.

It is an arithmetic number, because the mean of its divisors is an integer number (375354).

Almost surely, 2^9871392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9871392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13512744).

9871392 is an abundant number, since it is smaller than the sum of its proper divisors (17154096).

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

9871392 is a wasteful number, since it uses less digits than its factorization.

9871392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 143 counting only the distinct ones).

The product of its digits is 27216, while the sum is 39.

The square root of 9871392 is about 3141.8771459113. The cubic root of 9871392 is about 214.5158893039.

The spelling of 9871392 in words is "nine million, eight hundred seventy-one thousand, three hundred ninety-two".