133444433 has 2 divisors, whose sum is σ = 133444434. Its totient is φ = 133444432.

The previous prime is 133444427. The next prime is 133444453. The reversal of 133444433 is 334444331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124724224 + 8720209 = 11168^2 + 2953^2 .

It is a cyclic number.

It is not a de Polignac number, because 133444433 - 2⁴ = 133444417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133444396 and 133444405.

It is not a weakly prime, because it can be changed into another prime (133444403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66722216 + 66722217.

It is an arithmetic number, because the mean of its divisors is an integer number (66722217).

Almost surely, 2^133444433 is an apocalyptic number.

It is an amenable number.

133444433 is a deficient number, since it is larger than the sum of its proper divisors (1).

133444433 is an equidigital number, since it uses as much as digits as its factorization.

133444433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 29.

The square root of 133444433 is about 11551.8151387563. The cubic root of 133444433 is about 511.0148100737.

Adding to 133444433 its reverse (334444331), we get a palindrome (467888764).

The spelling of 133444433 in words is "one hundred thirty-three million, four hundred forty-four thousand, four hundred thirty-three".