133904729 has 8 divisors (see below), whose sum is σ = 156766848. Its totient is φ = 111975840.

The previous prime is 133904713. The next prime is 133904731. The reversal of 133904729 is 927409331.

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 133904729 - 2⁴ = 133904713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133904692 and 133904701.

It is not an unprimeable number, because it can be changed into a prime (133904789) 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, 232997 + ... + 233570.

It is an arithmetic number, because the mean of its divisors is an integer number (19595856).

Almost surely, 2^133904729 is an apocalyptic number.

It is an amenable number.

133904729 is a deficient number, since it is larger than the sum of its proper divisors (22862119).

133904729 is an equidigital number, since it uses as much as digits as its factorization.

133904729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466615.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 133904729 is about 11571.7210906589. The cubic root of 133904729 is about 511.6016914078.

The spelling of 133904729 in words is "one hundred thirty-three million, nine hundred four thousand, seven hundred twenty-nine".