8133989 has 2 divisors, whose sum is σ = 8133990. Its totient is φ = 8133988.

The previous prime is 8133971. The next prime is 8134003. The reversal of 8133989 is 9893318.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7924225 + 209764 = 2815^2 + 458^2 .

It is a cyclic number.

It is not a de Polignac number, because 8133989 - 2¹⁶ = 8068453 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8133929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4066994 + 4066995.

It is an arithmetic number, because the mean of its divisors is an integer number (4066995).

Almost surely, 2^8133989 is an apocalyptic number.

It is an amenable number.

8133989 is a deficient number, since it is larger than the sum of its proper divisors (1).

8133989 is an equidigital number, since it uses as much as digits as its factorization.

8133989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 41.

The square root of 8133989 is about 2852.0149017844. The cubic root of 8133989 is about 201.1103986648.

The spelling of 8133989 in words is "eight million, one hundred thirty-three thousand, nine hundred eighty-nine".