129430199 has 4 divisors (see below), whose sum is σ = 129473040. Its totient is φ = 129387360.

The previous prime is 129430183. The next prime is 129430201. The reversal of 129430199 is 991034921.

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

It is a cyclic number.

It is not a de Polignac number, because 129430199 - 2⁴ = 129430183 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 (129430099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16514 + ... + 23055.

It is an arithmetic number, because the mean of its divisors is an integer number (32368260).

Almost surely, 2^129430199 is an apocalyptic number.

129430199 is a deficient number, since it is larger than the sum of its proper divisors (42841).

129430199 is an equidigital number, since it uses as much as digits as its factorization.

129430199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42840.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 129430199 is about 11376.7393834965. The cubic root of 129430199 is about 505.8384906898.

The spelling of 129430199 in words is "one hundred twenty-nine million, four hundred thirty thousand, one hundred ninety-nine".