129034799 has 4 divisors (see below), whose sum is σ = 132522264. Its totient is φ = 125547336.

The previous prime is 129034793. The next prime is 129034819. The reversal of 129034799 is 997430921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129034799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129034793) 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, 1743677 + ... + 1743750.

It is an arithmetic number, because the mean of its divisors is an integer number (33130566).

Almost surely, 2^129034799 is an apocalyptic number.

129034799 is a deficient number, since it is larger than the sum of its proper divisors (3487465).

129034799 is an equidigital number, since it uses as much as digits as its factorization.

129034799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3487464.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 129034799 is about 11359.3485288550. The cubic root of 129034799 is about 505.3228651307.

The spelling of 129034799 in words is "one hundred twenty-nine million, thirty-four thousand, seven hundred ninety-nine".