133793905 has 8 divisors (see below), whose sum is σ = 183488832. Its totient is φ = 91744368.

The previous prime is 133793899. The next prime is 133793909. The reversal of 133793905 is 509397331.

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 133793905 - 2³ = 133793897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133793909) 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, 1911307 + ... + 1911376.

It is an arithmetic number, because the mean of its divisors is an integer number (22936104).

Almost surely, 2^133793905 is an apocalyptic number.

It is an amenable number.

133793905 is a deficient number, since it is larger than the sum of its proper divisors (49694927).

133793905 is an equidigital number, since it uses as much as digits as its factorization.

133793905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3822695.

The product of its (nonzero) digits is 76545, while the sum is 40.

The square root of 133793905 is about 11566.9315291481. The cubic root of 133793905 is about 511.4605129368.

The spelling of 133793905 in words is "one hundred thirty-three million, seven hundred ninety-three thousand, nine hundred five".