133885289 has 2 divisors, whose sum is σ = 133885290. Its totient is φ = 133885288.

The previous prime is 133885253. The next prime is 133885303. The reversal of 133885289 is 982588331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121176064 + 12709225 = 11008^2 + 3565^2 .

It is an emirp because it is prime and its reverse (982588331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133885289 - 2⁸ = 133885033 is a prime.

It is a super-2 number, since 2×133885289² = 35850541221227042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (133887289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66942644 + 66942645.

It is an arithmetic number, because the mean of its divisors is an integer number (66942645).

Almost surely, 2^133885289 is an apocalyptic number.

It is an amenable number.

133885289 is a deficient number, since it is larger than the sum of its proper divisors (1).

133885289 is an equidigital number, since it uses as much as digits as its factorization.

133885289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 47.

The square root of 133885289 is about 11570.8810814043. The cubic root of 133885289 is about 511.5769324659.

The spelling of 133885289 in words is "one hundred thirty-three million, eight hundred eighty-five thousand, two hundred eighty-nine".