9878143 has 4 divisors (see below), whose sum is σ = 10776168. Its totient is φ = 8980120.

The previous prime is 9878129. The next prime is 9878147. The reversal of 9878143 is 3418789.

9878143 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9878143 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9878096 and 9878105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9878147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 448996 + ... + 449017.

It is an arithmetic number, because the mean of its divisors is an integer number (2694042).

Almost surely, 2^9878143 is an apocalyptic number.

9878143 is a deficient number, since it is larger than the sum of its proper divisors (898025).

9878143 is a wasteful number, since it uses less digits than its factorization.

9878143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898024.

The product of its digits is 48384, while the sum is 40.

The square root of 9878143 is about 3142.9513200175. The cubic root of 9878143 is about 214.5647803065.

The spelling of 9878143 in words is "nine million, eight hundred seventy-eight thousand, one hundred forty-three".