133289239 has 2 divisors, whose sum is σ = 133289240. Its totient is φ = 133289238.

The previous prime is 133289183. The next prime is 133289251. The reversal of 133289239 is 932982331.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133289239 - 2⁷ = 133289111 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 (133289279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66644619 + 66644620.

It is an arithmetic number, because the mean of its divisors is an integer number (66644620).

Almost surely, 2^133289239 is an apocalyptic number.

133289239 is a deficient number, since it is larger than the sum of its proper divisors (1).

133289239 is an equidigital number, since it uses as much as digits as its factorization.

133289239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 40.

The square root of 133289239 is about 11545.0958852666. The cubic root of 133289239 is about 510.8166322139.

The spelling of 133289239 in words is "one hundred thirty-three million, two hundred eighty-nine thousand, two hundred thirty-nine".