133387829 has 2 divisors, whose sum is σ = 133387830. Its totient is φ = 133387828.

The previous prime is 133387819. The next prime is 133387853. The reversal of 133387829 is 928783331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101465329 + 31922500 = 10073^2 + 5650^2 .

It is a cyclic number.

It is not a de Polignac number, because 133387829 - 2²⁰ = 132339253 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133387829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133387819) 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, 66693914 + 66693915.

It is an arithmetic number, because the mean of its divisors is an integer number (66693915).

Almost surely, 2^133387829 is an apocalyptic number.

It is an amenable number.

133387829 is a deficient number, since it is larger than the sum of its proper divisors (1).

133387829 is an equidigital number, since it uses as much as digits as its factorization.

133387829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The square root of 133387829 is about 11549.3648743124. The cubic root of 133387829 is about 510.9425463545.

The spelling of 133387829 in words is "one hundred thirty-three million, three hundred eighty-seven thousand, eight hundred twenty-nine".