9878842 has 8 divisors (see below), whose sum is σ = 15069600. Its totient is φ = 4855644.

The previous prime is 9878839. The next prime is 9878851. The reversal of 9878842 is 2488789.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 9878792 and 9878801.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41742 + ... + 41977.

It is an arithmetic number, because the mean of its divisors is an integer number (1883700).

Almost surely, 2^9878842 is an apocalyptic number.

9878842 is a deficient number, since it is larger than the sum of its proper divisors (5190758).

9878842 is a wasteful number, since it uses less digits than its factorization.

9878842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83780.

The product of its digits is 258048, while the sum is 46.

The square root of 9878842 is about 3143.0625192637. The cubic root of 9878842 is about 214.5698412187.

The spelling of 9878842 in words is "nine million, eight hundred seventy-eight thousand, eight hundred forty-two".