133444673 has 2 divisors, whose sum is σ = 133444674. Its totient is φ = 133444672.

The previous prime is 133444669. The next prime is 133444691. The reversal of 133444673 is 376444331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68674369 + 64770304 = 8287^2 + 8048^2 .

It is a cyclic number.

It is not a de Polignac number, because 133444673 - 2² = 133444669 is a prime.

It is not a weakly prime, because it can be changed into another prime (133444613) 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, 66722336 + 66722337.

It is an arithmetic number, because the mean of its divisors is an integer number (66722337).

Almost surely, 2^133444673 is an apocalyptic number.

It is an amenable number.

133444673 is a deficient number, since it is larger than the sum of its proper divisors (1).

133444673 is an equidigital number, since it uses as much as digits as its factorization.

133444673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 35.

The square root of 133444673 is about 11551.8255267295. The cubic root of 133444673 is about 511.0151164271.

The spelling of 133444673 in words is "one hundred thirty-three million, four hundred forty-four thousand, six hundred seventy-three".