133957729 has 2 divisors, whose sum is σ = 133957730. Its totient is φ = 133957728.

The previous prime is 133957721. The next prime is 133957741. The reversal of 133957729 is 927759331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97476129 + 36481600 = 9873^2 + 6040^2 .

It is a cyclic number.

It is not a de Polignac number, because 133957729 - 2³ = 133957721 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133957721) 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, 66978864 + 66978865.

It is an arithmetic number, because the mean of its divisors is an integer number (66978865).

Almost surely, 2^133957729 is an apocalyptic number.

It is an amenable number.

133957729 is a deficient number, since it is larger than the sum of its proper divisors (1).

133957729 is an equidigital number, since it uses as much as digits as its factorization.

133957729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 357210, while the sum is 46.

The square root of 133957729 is about 11574.0109296648. The cubic root of 133957729 is about 511.6691804682.

The spelling of 133957729 in words is "one hundred thirty-three million, nine hundred fifty-seven thousand, seven hundred twenty-nine".