8345891 has 2 divisors, whose sum is σ = 8345892. Its totient is φ = 8345890.

The previous prime is 8345839. The next prime is 8345917. The reversal of 8345891 is 1985438.

8345891 is nontrivially palindromic in base 14.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8345891 - 2¹⁰ = 8344867 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8345801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4172945 + 4172946.

It is an arithmetic number, because the mean of its divisors is an integer number (4172946).

Almost surely, 2^8345891 is an apocalyptic number.

8345891 is a deficient number, since it is larger than the sum of its proper divisors (1).

8345891 is an equidigital number, since it uses as much as digits as its factorization.

8345891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 38.

The square root of 8345891 is about 2888.9255788268. The cubic root of 8345891 is about 202.8418530952.

It can be divided in two parts, 8 and 345891, that multiplied together give a triangular number (2767128 = T₂₃₅₂).

The spelling of 8345891 in words is "eight million, three hundred forty-five thousand, eight hundred ninety-one".