8389081 has 2 divisors, whose sum is σ = 8389082. Its totient is φ = 8389080.

The previous prime is 8389079. The next prime is 8389093. The reversal of 8389081 is 1809838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7840000 + 549081 = 2800^2 + 741^2 .

It is a cyclic number.

It is not a de Polignac number, because 8389081 - 2¹ = 8389079 is a prime.

It is a super-2 number, since 2×8389081² = 140753360049122, which contains 22 as substring.

Together with 8389079, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 8389081.

It is not a weakly prime, because it can be changed into another prime (8389001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4194540 + 4194541.

It is an arithmetic number, because the mean of its divisors is an integer number (4194541).

Almost surely, 2^8389081 is an apocalyptic number.

It is an amenable number.

8389081 is a deficient number, since it is larger than the sum of its proper divisors (1).

8389081 is an equidigital number, since it uses as much as digits as its factorization.

8389081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 8389081 is about 2896.3910302306. The cubic root of 8389081 is about 203.1911535534.

The spelling of 8389081 in words is "eight million, three hundred eighty-nine thousand, eighty-one".