9878423 has 4 divisors (see below), whose sum is σ = 10398360. Its totient is φ = 9358488.

The previous prime is 9878419. The next prime is 9878467. The reversal of 9878423 is 3248789.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3248789 = 1451 ⋅2239.

It is not a de Polignac number, because 9878423 - 2² = 9878419 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 (9878483) 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, 259940 + ... + 259977.

It is an arithmetic number, because the mean of its divisors is an integer number (2599590).

Almost surely, 2^9878423 is an apocalyptic number.

9878423 is a deficient number, since it is larger than the sum of its proper divisors (519937).

9878423 is a wasteful number, since it uses less digits than its factorization.

9878423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519936.

The product of its digits is 96768, while the sum is 41.

The square root of 9878423 is about 3142.9958638217. The cubic root of 9878423 is about 214.5668075961.

It can be divided in two parts, 9878 and 423, that added together give a palindrome (10301).

The spelling of 9878423 in words is "nine million, eight hundred seventy-eight thousand, four hundred twenty-three".