133828729 has 2 divisors, whose sum is σ = 133828730. Its totient is φ = 133828728.

The previous prime is 133828691. The next prime is 133828753. The reversal of 133828729 is 927828331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130759225 + 3069504 = 11435^2 + 1752^2 .

It is a cyclic number.

It is not a de Polignac number, because 133828729 - 2²⁵ = 100274297 is a prime.

It is not a weakly prime, because it can be changed into another prime (133828759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66914364 + 66914365.

It is an arithmetic number, because the mean of its divisors is an integer number (66914365).

Almost surely, 2^133828729 is an apocalyptic number.

It is an amenable number.

133828729 is a deficient number, since it is larger than the sum of its proper divisors (1).

133828729 is an equidigital number, since it uses as much as digits as its factorization.

133828729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 43.

The square root of 133828729 is about 11568.4367569694. The cubic root of 133828729 is about 511.5048835575.

The spelling of 133828729 in words is "one hundred thirty-three million, eight hundred twenty-eight thousand, seven hundred twenty-nine".