133444469 has 2 divisors, whose sum is σ = 133444470. Its totient is φ = 133444468.

The previous prime is 133444453. The next prime is 133444501. The reversal of 133444469 is 964444331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101747569 + 31696900 = 10087^2 + 5630^2 .

It is a cyclic number.

It is not a de Polignac number, because 133444469 - 2⁴ = 133444453 is a prime.

It is a super-2 number, since 2×133444469² = 35614852613383922, which contains 22 as substring.

It is equal to p_7562378 and since 133444469 and 7562378 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133444669) 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, 66722234 + 66722235.

It is an arithmetic number, because the mean of its divisors is an integer number (66722235).

Almost surely, 2^133444469 is an apocalyptic number.

It is an amenable number.

133444469 is a deficient number, since it is larger than the sum of its proper divisors (1).

133444469 is an equidigital number, since it uses as much as digits as its factorization.

133444469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 38.

The square root of 133444469 is about 11551.8166969529. The cubic root of 133444469 is about 511.0148560267.

The spelling of 133444469 in words is "one hundred thirty-three million, four hundred forty-four thousand, four hundred sixty-nine".