9878291 has 2 divisors, whose sum is σ = 9878292. Its totient is φ = 9878290.

The previous prime is 9878257. The next prime is 9878303. The reversal of 9878291 is 1928789.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9878291 - 2⁶ = 9878227 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (9878251) 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, 4939145 + 4939146.

It is an arithmetic number, because the mean of its divisors is an integer number (4939146).

Almost surely, 2^9878291 is an apocalyptic number.

9878291 is a deficient number, since it is larger than the sum of its proper divisors (1).

9878291 is an equidigital number, since it uses as much as digits as its factorization.

9878291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 44.

The square root of 9878291 is about 3142.9748646784. The cubic root of 9878291 is about 214.5658518786.

The spelling of 9878291 in words is "nine million, eight hundred seventy-eight thousand, two hundred ninety-one".