129916433 has 8 divisors (see below), whose sum is σ = 141470400. Its totient is φ = 118834128.

The previous prime is 129916429. The next prime is 129916447. The reversal of 129916433 is 334619921.

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 129916433 - 2² = 129916429 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129916403) 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, 117341 + ... + 118442.

It is an arithmetic number, because the mean of its divisors is an integer number (17683800).

Almost surely, 2^129916433 is an apocalyptic number.

It is an amenable number.

129916433 is a deficient number, since it is larger than the sum of its proper divisors (11553967).

129916433 is a wasteful number, since it uses less digits than its factorization.

129916433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235831.

The product of its digits is 34992, while the sum is 38.

The square root of 129916433 is about 11398.0890064958. The cubic root of 129916433 is about 506.4711316020.

The spelling of 129916433 in words is "one hundred twenty-nine million, nine hundred sixteen thousand, four hundred thirty-three".