133808899 has 4 divisors (see below), whose sum is σ = 152924464. Its totient is φ = 114693336.

The previous prime is 133808893. The next prime is 133808911. The reversal of 133808899 is 998808331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 998808331 = 2417 ⋅413243.

It is a cyclic number.

It is not a de Polignac number, because 133808899 - 2³ = 133808891 is a prime.

It is a super-3 number, since 3×133808899³ (a number of 25 digits) contains 333 as substring.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (133808891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9557772 + ... + 9557785.

It is an arithmetic number, because the mean of its divisors is an integer number (38231116).

Almost surely, 2^133808899 is an apocalyptic number.

133808899 is a deficient number, since it is larger than the sum of its proper divisors (19115565).

133808899 is an equidigital number, since it uses as much as digits as its factorization.

133808899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19115564.

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 133808899 is about 11567.5796517681. The cubic root of 133808899 is about 511.4796183225.

The spelling of 133808899 in words is "one hundred thirty-three million, eight hundred eight thousand, eight hundred ninety-nine".