133499906 has 8 divisors (see below), whose sum is σ = 200302284. Its totient is φ = 66732480.

The previous prime is 133499893. The next prime is 133499917. The reversal of 133499906 is 609994331.

It can be written as a sum of positive squares in 2 ways, for example, as 89397025 + 44102881 = 9455^2 + 6641^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5366 + ... + 17198.

Almost surely, 2^133499906 is an apocalyptic number.

133499906 is a deficient number, since it is larger than the sum of its proper divisors (66802378).

133499906 is a wasteful number, since it uses less digits than its factorization.

133499906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17476.

The product of its (nonzero) digits is 157464, while the sum is 44.

The square root of 133499906 is about 11554.2159405128. The cubic root of 133499906 is about 511.0856100733.

The spelling of 133499906 in words is "one hundred thirty-three million, four hundred ninety-nine thousand, nine hundred six".