133985239 has 2 divisors, whose sum is σ = 133985240. Its totient is φ = 133985238.

The previous prime is 133985231. The next prime is 133985263. The reversal of 133985239 is 932589331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133985239 - 2³ = 133985231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133985195 and 133985204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133985231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66992619 + 66992620.

It is an arithmetic number, because the mean of its divisors is an integer number (66992620).

Almost surely, 2^133985239 is an apocalyptic number.

133985239 is a deficient number, since it is larger than the sum of its proper divisors (1).

133985239 is an equidigital number, since it uses as much as digits as its factorization.

133985239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 43.

The square root of 133985239 is about 11575.1993071394. The cubic root of 133985239 is about 511.7042040929.

The spelling of 133985239 in words is "one hundred thirty-three million, nine hundred eighty-five thousand, two hundred thirty-nine".