133489393 has 12 divisors (see below), whose sum is σ = 137147472. Its totient is φ = 129918360.

The previous prime is 133489337. The next prime is 133489397. The reversal of 133489393 is 393984331.

It is not a de Polignac number, because 133489393 - 2⁹ = 133488881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133489397) 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 11 ways as a sum of consecutive naturals, for example, 587946 + ... + 588172.

It is an arithmetic number, because the mean of its divisors is an integer number (11428956).

Almost surely, 2^133489393 is an apocalyptic number.

It is an amenable number.

133489393 is a deficient number, since it is larger than the sum of its proper divisors (3658079).

133489393 is an equidigital number, since it uses as much as digits as its factorization.

133489393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 425 counting only the distinct ones).

The product of its digits is 209952, while the sum is 43.

The square root of 133489393 is about 11553.7609893922. The cubic root of 133489393 is about 511.0721938740.

The spelling of 133489393 in words is "one hundred thirty-three million, four hundred eighty-nine thousand, three hundred ninety-three".