8106389 has 2 divisors, whose sum is σ = 8106390. Its totient is φ = 8106388.

The previous prime is 8106379. The next prime is 8106391. The reversal of 8106389 is 9836018.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6027025 + 2079364 = 2455^2 + 1442^2 .

It is a cyclic number.

It is not a de Polignac number, because 8106389 - 2¹⁶ = 8040853 is a prime.

Together with 8106391, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8106349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4053194 + 4053195.

It is an arithmetic number, because the mean of its divisors is an integer number (4053195).

Almost surely, 2^8106389 is an apocalyptic number.

It is an amenable number.

8106389 is a deficient number, since it is larger than the sum of its proper divisors (1).

8106389 is an equidigital number, since it uses as much as digits as its factorization.

8106389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 8106389 is about 2847.1721057920. The cubic root of 8106389 is about 200.8826737048.

The spelling of 8106389 in words is "eight million, one hundred six thousand, three hundred eighty-nine".