133334891 has 8 divisors (see below), whose sum is σ = 135598800. Its totient is φ = 131079168.

The previous prime is 133334881. The next prime is 133334897. The reversal of 133334891 is 198433331.

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 133334891 - 2⁶ = 133334827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133334897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36935 + ... + 40383.

It is an arithmetic number, because the mean of its divisors is an integer number (16949850).

Almost surely, 2^133334891 is an apocalyptic number.

133334891 is a deficient number, since it is larger than the sum of its proper divisors (2263909).

133334891 is an equidigital number, since it uses as much as digits as its factorization.

133334891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4093.

The product of its digits is 23328, while the sum is 35.

The square root of 133334891 is about 11547.0728325407. The cubic root of 133334891 is about 510.8749443457.

The spelling of 133334891 in words is "one hundred thirty-three million, three hundred thirty-four thousand, eight hundred ninety-one".