9921167 has 2 divisors, whose sum is σ = 9921168. Its totient is φ = 9921166.

The previous prime is 9921137. The next prime is 9921169. The reversal of 9921167 is 7611299.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9921167 is a prime.

Together with 9921169, 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 (9921169) 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, 4960583 + 4960584.

It is an arithmetic number, because the mean of its divisors is an integer number (4960584).

Almost surely, 2^9921167 is an apocalyptic number.

9921167 is a deficient number, since it is larger than the sum of its proper divisors (1).

9921167 is an equidigital number, since it uses as much as digits as its factorization.

9921167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 35.

The square root of 9921167 is about 3149.7884055917. The cubic root of 9921167 is about 214.8758396158.

The spelling of 9921167 in words is "nine million, nine hundred twenty-one thousand, one hundred sixty-seven".