133684449 has 8 divisors (see below), whose sum is σ = 179011872. Its totient is φ = 88740000.

The previous prime is 133684433. The next prime is 133684451. The reversal of 133684449 is 944486331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133684449 - 2⁴ = 133684433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133684449.

It is not an unprimeable number, because it can be changed into a prime (133684459) 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 7 ways as a sum of consecutive naturals, for example, 94927 + ... + 96324.

It is an arithmetic number, because the mean of its divisors is an integer number (22376484).

Almost surely, 2^133684449 is an apocalyptic number.

It is an amenable number.

133684449 is a deficient number, since it is larger than the sum of its proper divisors (45327423).

133684449 is a wasteful number, since it uses less digits than its factorization.

133684449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191487.

The product of its digits is 248832, while the sum is 42.

The square root of 133684449 is about 11562.1991420318. The cubic root of 133684449 is about 511.3210006146.

The spelling of 133684449 in words is "one hundred thirty-three million, six hundred eighty-four thousand, four hundred forty-nine".