133859209 has 8 divisors (see below), whose sum is σ = 150739200. Its totient is φ = 117764400.

The previous prime is 133859197. The next prime is 133859249. The reversal of 133859209 is 902958331.

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

It is a cyclic number.

It is not a de Polignac number, because 133859209 - 2¹³ = 133851017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133859249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195934 + ... + 196615.

It is an arithmetic number, because the mean of its divisors is an integer number (18842400).

Almost surely, 2^133859209 is an apocalyptic number.

It is an amenable number.

133859209 is a deficient number, since it is larger than the sum of its proper divisors (16879991).

133859209 is a wasteful number, since it uses less digits than its factorization.

133859209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392591.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 133859209 is about 11569.7540596160. The cubic root of 133859209 is about 511.5437130014.

The spelling of 133859209 in words is "one hundred thirty-three million, eight hundred fifty-nine thousand, two hundred nine".