129808533 has 8 divisors (see below), whose sum is σ = 174792096. Its totient is φ = 85682000.

The previous prime is 129808517. The next prime is 129808561. The reversal of 129808533 is 335808921.

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 129808533 - 2⁴ = 129808517 is a prime.

It is a super-2 number, since 2×129808533² = 33700510479224178, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 129808491 and 129808500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129808333) 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, 213903 + ... + 214508.

It is an arithmetic number, because the mean of its divisors is an integer number (21849012).

Almost surely, 2^129808533 is an apocalyptic number.

It is an amenable number.

129808533 is a deficient number, since it is larger than the sum of its proper divisors (44983563).

129808533 is a wasteful number, since it uses less digits than its factorization.

129808533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428515.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 129808533 is about 11393.3547737267. The cubic root of 129808533 is about 506.3308789543.

The spelling of 129808533 in words is "one hundred twenty-nine million, eight hundred eight thousand, five hundred thirty-three".