9878929 has 2 divisors, whose sum is σ = 9878930. Its totient is φ = 9878928.

The previous prime is 9878927. The next prime is 9879007. The reversal of 9878929 is 9298789.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9443329 + 435600 = 3073^2 + 660^2 .

It is a cyclic number.

It is not a de Polignac number, because 9878929 - 2¹ = 9878927 is a prime.

Together with 9878927, it forms a pair of twin primes.

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

It is not a weakly prime, because it can be changed into another prime (9878923) 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 as a sum of consecutive naturals, namely, 4939464 + 4939465.

It is an arithmetic number, because the mean of its divisors is an integer number (4939465).

Almost surely, 2^9878929 is an apocalyptic number.

It is an amenable number.

9878929 is a deficient number, since it is larger than the sum of its proper divisors (1).

9878929 is an equidigital number, since it uses as much as digits as its factorization.

9878929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 52.

The square root of 9878929 is about 3143.0763592379. The cubic root of 9878929 is about 214.5704711009.

The spelling of 9878929 in words is "nine million, eight hundred seventy-eight thousand, nine hundred twenty-nine".