129349401 has 8 divisors (see below), whose sum is σ = 179964480. Its totient is φ = 82483632.

The previous prime is 129349399. The next prime is 129349421. The reversal of 129349401 is 104943921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129349401 - 2¹ = 129349399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129349421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 937246 + ... + 937383.

It is an arithmetic number, because the mean of its divisors is an integer number (22495560).

Almost surely, 2^129349401 is an apocalyptic number.

It is an amenable number.

129349401 is a deficient number, since it is larger than the sum of its proper divisors (50615079).

129349401 is a wasteful number, since it uses less digits than its factorization.

129349401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874655.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 129349401 is about 11373.1878116911. The cubic root of 129349401 is about 505.7332106592.

The spelling of 129349401 in words is "one hundred twenty-nine million, three hundred forty-nine thousand, four hundred one".