9677891 has 2 divisors, whose sum is σ = 9677892. Its totient is φ = 9677890.

The previous prime is 9677873. The next prime is 9677893. The reversal of 9677891 is 1987769.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9677891 - 2¹⁴ = 9661507 is a prime.

Together with 9677893, 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 (9677893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4838945 + 4838946.

It is an arithmetic number, because the mean of its divisors is an integer number (4838946).

Almost surely, 2^9677891 is an apocalyptic number.

9677891 is a deficient number, since it is larger than the sum of its proper divisors (1).

9677891 is an equidigital number, since it uses as much as digits as its factorization.

9677891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 47.

The square root of 9677891 is about 3110.9308896213. The cubic root of 9677891 is about 213.1049685768.

It can be divided in two parts, 96778 and 91, that added together give a palindrome (96869).

The spelling of 9677891 in words is "nine million, six hundred seventy-seven thousand, eight hundred ninety-one".