8126891 has 2 divisors, whose sum is σ = 8126892. Its totient is φ = 8126890.

The previous prime is 8126887. The next prime is 8126893. The reversal of 8126891 is 1986218.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8126891 - 2² = 8126887 is a prime.

Together with 8126893, 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 (8126893) 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, 4063445 + 4063446.

It is an arithmetic number, because the mean of its divisors is an integer number (4063446).

Almost surely, 2^8126891 is an apocalyptic number.

8126891 is a deficient number, since it is larger than the sum of its proper divisors (1).

8126891 is an equidigital number, since it uses as much as digits as its factorization.

8126891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 35.

The square root of 8126891 is about 2850.7702467930. The cubic root of 8126891 is about 201.0518830118.

The spelling of 8126891 in words is "eight million, one hundred twenty-six thousand, eight hundred ninety-one".