133133939 has 4 divisors (see below), whose sum is σ = 135966624. Its totient is φ = 130301256.

The previous prime is 133133863. The next prime is 133133947. The reversal of 133133939 is 939331331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 939331331 = 47 ⋅19985773.

It is a cyclic number.

It is not a de Polignac number, because 133133939 - 2²⁰ = 132085363 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133133899 and 133133908.

It is not an unprimeable number, because it can be changed into a prime (133133339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1416272 + ... + 1416365.

It is an arithmetic number, because the mean of its divisors is an integer number (33991656).

Almost surely, 2^133133939 is an apocalyptic number.

133133939 is a deficient number, since it is larger than the sum of its proper divisors (2832685).

133133939 is an equidigital number, since it uses as much as digits as its factorization.

133133939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832684.

The product of its digits is 19683, while the sum is 35.

The square root of 133133939 is about 11538.3681255193. The cubic root of 133133939 is about 510.6181649469.

The spelling of 133133939 in words is "one hundred thirty-three million, one hundred thirty-three thousand, nine hundred thirty-nine".