133839834 has 16 divisors (see below), whose sum is σ = 276314880. Its totient is φ = 43174080.

The previous prime is 133839833. The next prime is 133839863. The reversal of 133839834 is 438938331.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133839833) 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, 359599 + ... + 359970.

It is an arithmetic number, because the mean of its divisors is an integer number (17269680).

Almost surely, 2^133839834 is an apocalyptic number.

133839834 is an abundant number, since it is smaller than the sum of its proper divisors (142475046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133839834 is a wasteful number, since it uses less digits than its factorization.

133839834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719605.

The product of its digits is 186624, while the sum is 42.

The square root of 133839834 is about 11568.9167167890. The cubic root of 133839834 is about 511.5190312537.

The spelling of 133839834 in words is "one hundred thirty-three million, eight hundred thirty-nine thousand, eight hundred thirty-four".