129339394 has 8 divisors (see below), whose sum is σ = 198137088. Its totient is φ = 63293700.

The previous prime is 129339377. The next prime is 129339421. The reversal of 129339394 is 493933921.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 129339394.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687882 + ... + 688069.

It is an arithmetic number, because the mean of its divisors is an integer number (24767136).

Almost surely, 2^129339394 is an apocalyptic number.

129339394 is a deficient number, since it is larger than the sum of its proper divisors (68797694).

129339394 is a wasteful number, since it uses less digits than its factorization.

129339394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376000.

The product of its digits is 157464, while the sum is 43.

The square root of 129339394 is about 11372.7478649621. The cubic root of 129339394 is about 505.7201684579.

The spelling of 129339394 in words is "one hundred twenty-nine million, three hundred thirty-nine thousand, three hundred ninety-four".