133729385 has 16 divisors (see below), whose sum is σ = 164400192. Its totient is φ = 104395200.

The previous prime is 133729373. The next prime is 133729397. The reversal of 133729385 is 583927331.

It is an interprime number because it is at equal distance from previous prime (133729373) and next prime (133729397).

It is not a de Polignac number, because 133729385 - 2⁴ = 133729369 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38282 + ... + 41628.

It is an arithmetic number, because the mean of its divisors is an integer number (10275012).

Almost surely, 2^133729385 is an apocalyptic number.

It is an amenable number.

133729385 is a deficient number, since it is larger than the sum of its proper divisors (30670807).

133729385 is a wasteful number, since it uses less digits than its factorization.

133729385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3544.

The product of its digits is 136080, while the sum is 41.

The square root of 133729385 is about 11564.1422077040. The cubic root of 133729385 is about 511.3782851298.

The spelling of 133729385 in words is "one hundred thirty-three million, seven hundred twenty-nine thousand, three hundred eighty-five".