9901867 has 2 divisors, whose sum is σ = 9901868. Its totient is φ = 9901866.

The previous prime is 9901841. The next prime is 9901877. The reversal of 9901867 is 7681099.

9901867 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 9901867 - 2¹⁵ = 9869099 is a prime.

It is not a weakly prime, because it can be changed into another prime (9901807) 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, 4950933 + 4950934.

It is an arithmetic number, because the mean of its divisors is an integer number (4950934).

Almost surely, 2^9901867 is an apocalyptic number.

9901867 is a deficient number, since it is larger than the sum of its proper divisors (1).

9901867 is an equidigital number, since it uses as much as digits as its factorization.

9901867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 9901867 is about 3146.7232162998. The cubic root of 9901867 is about 214.7364139554.

The spelling of 9901867 in words is "nine million, nine hundred one thousand, eight hundred sixty-seven".