129804833 has 4 divisors (see below), whose sum is σ = 129995568. Its totient is φ = 129614100.

The previous prime is 129804799. The next prime is 129804907. The reversal of 129804833 is 338408921.

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, and also an emirpimes, since its reverse is a distinct semiprime: 338408921 = 109 ⋅3104669.

It is a cyclic number.

It is not a de Polignac number, because 129804833 - 2¹⁰ = 129803809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129804133) 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, 94343 + ... + 95708.

It is an arithmetic number, because the mean of its divisors is an integer number (32498892).

Almost surely, 2^129804833 is an apocalyptic number.

It is an amenable number.

129804833 is a deficient number, since it is larger than the sum of its proper divisors (190735).

129804833 is an equidigital number, since it uses as much as digits as its factorization.

129804833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190734.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 129804833 is about 11393.1923972169. The cubic root of 129804833 is about 506.3260681713.

The spelling of 129804833 in words is "one hundred twenty-nine million, eight hundred four thousand, eight hundred thirty-three".