133039609 has 2 divisors, whose sum is σ = 133039610. Its totient is φ = 133039608.

The previous prime is 133039573. The next prime is 133039633. The reversal of 133039609 is 906930331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75203584 + 57836025 = 8672^2 + 7605^2 .

It is a cyclic number.

It is not a de Polignac number, because 133039609 - 2⁷ = 133039481 is a prime.

It is not a weakly prime, because it can be changed into another prime (133039639) 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, 66519804 + 66519805.

It is an arithmetic number, because the mean of its divisors is an integer number (66519805).

Almost surely, 2^133039609 is an apocalyptic number.

It is an amenable number.

133039609 is a deficient number, since it is larger than the sum of its proper divisors (1).

133039609 is an equidigital number, since it uses as much as digits as its factorization.

133039609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13122, while the sum is 34.

The square root of 133039609 is about 11534.2797347732. The cubic root of 133039609 is about 510.4975395771.

The spelling of 133039609 in words is "one hundred thirty-three million, thirty-nine thousand, six hundred nine".