235133489 has 2 divisors, whose sum is σ = 235133490. Its totient is φ = 235133488.

The previous prime is 235133453. The next prime is 235133491. The reversal of 235133489 is 984331532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 233845264 + 1288225 = 15292^2 + 1135^2 .

It is a cyclic number.

It is not a de Polignac number, because 235133489 - 2¹² = 235129393 is a prime.

Together with 235133491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (235133429) 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, 117566744 + 117566745.

It is an arithmetic number, because the mean of its divisors is an integer number (117566745).

Almost surely, 2^235133489 is an apocalyptic number.

It is an amenable number.

235133489 is a deficient number, since it is larger than the sum of its proper divisors (1).

235133489 is an equidigital number, since it uses as much as digits as its factorization.

235133489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 38.

The square root of 235133489 is about 15334.0630297387. The cubic root of 235133489 is about 617.2174027480.

The spelling of 235133489 in words is "two hundred thirty-five million, one hundred thirty-three thousand, four hundred eighty-nine".