9806143 has 4 divisors (see below), whose sum is σ = 9816040. Its totient is φ = 9796248.

The previous prime is 9806117. The next prime is 9806171. The reversal of 9806143 is 3416089.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3416089 = 1523 ⋅2243.

It is a cyclic number.

It is not a de Polignac number, because 9806143 - 2²¹ = 7708991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9806183) 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, 3273 + ... + 5506.

It is an arithmetic number, because the mean of its divisors is an integer number (2454010).

Almost surely, 2^9806143 is an apocalyptic number.

9806143 is a deficient number, since it is larger than the sum of its proper divisors (9897).

9806143 is a wasteful number, since it uses less digits than its factorization.

9806143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9896.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 9806143 is about 3131.4761694766. The cubic root of 9806143 is about 214.0422006041.

The spelling of 9806143 in words is "nine million, eight hundred six thousand, one hundred forty-three".