129569033 has 4 divisors (see below), whose sum is σ = 141348048. Its totient is φ = 117790020.

The previous prime is 129569029. The next prime is 129569039. The reversal of 129569033 is 330965921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 129569033 - 2² = 129569029 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129569039) 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, 5889491 + ... + 5889512.

It is an arithmetic number, because the mean of its divisors is an integer number (35337012).

Almost surely, 2^129569033 is an apocalyptic number.

It is an amenable number.

129569033 is a deficient number, since it is larger than the sum of its proper divisors (11779015).

129569033 is a wasteful number, since it uses less digits than its factorization.

129569033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11779014.

The product of its (nonzero) digits is 43740, while the sum is 38.

The square root of 129569033 is about 11382.8394085132. The cubic root of 129569033 is about 506.0192895207.

The spelling of 129569033 in words is "one hundred twenty-nine million, five hundred sixty-nine thousand, thirty-three".