133389229 has 4 divisors (see below), whose sum is σ = 133773984. Its totient is φ = 133004476.

The previous prime is 133389199. The next prime is 133389247. The reversal of 133389229 is 922983331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 922983331 = 149 ⋅6194519.

It is a cyclic number.

It is not a de Polignac number, because 133389229 - 2¹¹ = 133387181 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133389191 and 133389200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133389829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191857 + ... + 192550.

It is an arithmetic number, because the mean of its divisors is an integer number (33443496).

Almost surely, 2^133389229 is an apocalyptic number.

It is an amenable number.

133389229 is a deficient number, since it is larger than the sum of its proper divisors (384755).

133389229 is an equidigital number, since it uses as much as digits as its factorization.

133389229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384754.

The product of its digits is 69984, while the sum is 40.

The square root of 133389229 is about 11549.4254835468. The cubic root of 133389229 is about 510.9443339165.

The spelling of 133389229 in words is "one hundred thirty-three million, three hundred eighty-nine thousand, two hundred twenty-nine".