133406473 has 2 divisors, whose sum is σ = 133406474. Its totient is φ = 133406472.

The previous prime is 133406443. The next prime is 133406491. The reversal of 133406473 is 374604331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96098809 + 37307664 = 9803^2 + 6108^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133406473 is a prime.

It is not a weakly prime, because it can be changed into another prime (133406443) 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, 66703236 + 66703237.

It is an arithmetic number, because the mean of its divisors is an integer number (66703237).

Almost surely, 2^133406473 is an apocalyptic number.

It is an amenable number.

133406473 is a deficient number, since it is larger than the sum of its proper divisors (1).

133406473 is an equidigital number, since it uses as much as digits as its factorization.

133406473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 31.

The square root of 133406473 is about 11550.1719900614. The cubic root of 133406473 is about 510.9663505479.

The spelling of 133406473 in words is "one hundred thirty-three million, four hundred six thousand, four hundred seventy-three".