9421871 has 2 divisors, whose sum is σ = 9421872. Its totient is φ = 9421870.

The previous prime is 9421849. The next prime is 9421873. The reversal of 9421871 is 1781249.

9421871 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9421871 is a prime.

Together with 9421873, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9421873) 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, 4710935 + 4710936.

It is an arithmetic number, because the mean of its divisors is an integer number (4710936).

Almost surely, 2^9421871 is an apocalyptic number.

9421871 is a deficient number, since it is larger than the sum of its proper divisors (1).

9421871 is an equidigital number, since it uses as much as digits as its factorization.

9421871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 32.

The square root of 9421871 is about 3069.5066378817. The cubic root of 9421871 is about 211.2089826179.

The spelling of 9421871 in words is "nine million, four hundred twenty-one thousand, eight hundred seventy-one".