8421167 has 2 divisors, whose sum is σ = 8421168. Its totient is φ = 8421166.

The previous prime is 8421143. The next prime is 8421173. The reversal of 8421167 is 7611248.

8421167 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 not a de Polignac number, because 8421167 - 2²⁰ = 7372591 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8421187) 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, 4210583 + 4210584.

It is an arithmetic number, because the mean of its divisors is an integer number (4210584).

Almost surely, 2^8421167 is an apocalyptic number.

8421167 is a deficient number, since it is larger than the sum of its proper divisors (1).

8421167 is an equidigital number, since it uses as much as digits as its factorization.

8421167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 29.

The square root of 8421167 is about 2901.9247061218. The cubic root of 8421167 is about 203.4498746644.

The spelling of 8421167 in words is "eight million, four hundred twenty-one thousand, one hundred sixty-seven".