133999833 has 8 divisors (see below), whose sum is σ = 194908896. Its totient is φ = 81212000.

The previous prime is 133999823. The next prime is 133999841. The reversal of 133999833 is 338999331.

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 133999833 - 2²⁰ = 132951257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133999813) 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, 2030268 + ... + 2030333.

It is an arithmetic number, because the mean of its divisors is an integer number (24363612).

Almost surely, 2^133999833 is an apocalyptic number.

It is an amenable number.

133999833 is a deficient number, since it is larger than the sum of its proper divisors (60909063).

133999833 is a wasteful number, since it uses less digits than its factorization.

133999833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4060615.

The product of its digits is 472392, while the sum is 48.

The square root of 133999833 is about 11575.8296894866. The cubic root of 133999833 is about 511.7227821097.

It can be divided in two parts, 13399 and 9833, that added together give a palindrome (23232).

The spelling of 133999833 in words is "one hundred thirty-three million, nine hundred ninety-nine thousand, eight hundred thirty-three".