133739829 has 20 divisors (see below), whose sum is σ = 203560236. Its totient is φ = 87474816.

The previous prime is 133739813. The next prime is 133739831. The reversal of 133739829 is 928937331.

It can be written as a sum of positive squares in 2 ways, for example, as 64883025 + 68856804 = 8055^2 + 8298^2 .

It is not a de Polignac number, because 133739829 - 2⁴ = 133739813 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133739849) 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 in 19 ways as a sum of consecutive naturals, for example, 11284 + ... + 19869.

Almost surely, 2^133739829 is an apocalyptic number.

It is an amenable number.

133739829 is a deficient number, since it is larger than the sum of its proper divisors (69820407).

133739829 is an equidigital number, since it uses as much as digits as its factorization.

133739829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31218 (or 31209 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 133739829 is about 11564.5937671844. The cubic root of 133739829 is about 511.3915973268.

The spelling of 133739829 in words is "one hundred thirty-three million, seven hundred thirty-nine thousand, eight hundred twenty-nine".