133963729 has 2 divisors, whose sum is σ = 133963730. Its totient is φ = 133963728.

The previous prime is 133963721. The next prime is 133963759. The reversal of 133963729 is 927369331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131056704 + 2907025 = 11448^2 + 1705^2 .

It is a cyclic number.

It is not a de Polignac number, because 133963729 - 2³ = 133963721 is a prime.

It is not a weakly prime, because it can be changed into another prime (133963721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66981864 + 66981865.

It is an arithmetic number, because the mean of its divisors is an integer number (66981865).

Almost surely, 2^133963729 is an apocalyptic number.

It is an amenable number.

133963729 is a deficient number, since it is larger than the sum of its proper divisors (1).

133963729 is an equidigital number, since it uses as much as digits as its factorization.

133963729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 183708, while the sum is 43.

The square root of 133963729 is about 11574.2701281765. The cubic root of 133963729 is about 511.6768196174.

The spelling of 133963729 in words is "one hundred thirty-three million, nine hundred sixty-three thousand, seven hundred twenty-nine".