9878913 has 12 divisors (see below), whose sum is σ = 15566928. Its totient is φ = 5987160.

The previous prime is 9878903. The next prime is 9878923. The reversal of 9878913 is 3198789.

9878913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9878903) and next prime (9878923).

It is not a de Polignac number, because 9878913 - 2⁸ = 9878657 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9878903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49795 + ... + 49992.

It is an arithmetic number, because the mean of its divisors is an integer number (1297244).

Almost surely, 2^9878913 is an apocalyptic number.

It is an amenable number.

9878913 is a deficient number, since it is larger than the sum of its proper divisors (5688015).

9878913 is a wasteful number, since it uses less digits than its factorization.

9878913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99804 (or 99801 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 9878913 is about 3143.0738139598. The cubic root of 9878913 is about 214.5703552608.

The spelling of 9878913 in words is "nine million, eight hundred seventy-eight thousand, nine hundred thirteen".