9884891 has 2 divisors, whose sum is σ = 9884892. Its totient is φ = 9884890.

The previous prime is 9884887. The next prime is 9884893. The reversal of 9884891 is 1984889.

9884891 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 9884891 - 2² = 9884887 is a prime.

It is a super-2 number, since 2×9884891² = 195422140163762, which contains 22 as substring.

Together with 9884893, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9884893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4942445 + 4942446.

It is an arithmetic number, because the mean of its divisors is an integer number (4942446).

Almost surely, 2^9884891 is an apocalyptic number.

9884891 is a deficient number, since it is larger than the sum of its proper divisors (1).

9884891 is an equidigital number, since it uses as much as digits as its factorization.

9884891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 47.

The square root of 9884891 is about 3144.0246500306. The cubic root of 9884891 is about 214.6136273272.

The spelling of 9884891 in words is "nine million, eight hundred eighty-four thousand, eight hundred ninety-one".