9872135 has 24 divisors (see below), whose sum is σ = 14669280. Its totient is φ = 6244992.

The previous prime is 9872131. The next prime is 9872171. The reversal of 9872135 is 5312789.

It is not a de Polignac number, because 9872135 - 2² = 9872131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a junction number, because it is equal to n+sod(n) for n = 9872095 and 9872104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9872131) 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 23 ways as a sum of consecutive naturals, for example, 5081 + ... + 6749.

It is an arithmetic number, because the mean of its divisors is an integer number (611220).

Almost surely, 2^9872135 is an apocalyptic number.

9872135 is a deficient number, since it is larger than the sum of its proper divisors (4797145).

9872135 is a wasteful number, since it uses less digits than its factorization.

9872135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707 (or 1694 counting only the distinct ones).

The product of its digits is 15120, while the sum is 35.

The square root of 9872135 is about 3141.9953851016. The cubic root of 9872135 is about 214.5212712300.

The spelling of 9872135 in words is "nine million, eight hundred seventy-two thousand, one hundred thirty-five".