129923394 has 8 divisors (see below), whose sum is σ = 259846800. Its totient is φ = 43307796.

The previous prime is 129923377. The next prime is 129923407. The reversal of 129923394 is 493329921.

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

129923394 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10826944 + ... + 10826955.

It is an arithmetic number, because the mean of its divisors is an integer number (32480850).

Almost surely, 2^129923394 is an apocalyptic number.

129923394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129923394 is a wasteful number, since it uses less digits than its factorization.

129923394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21653904.

The product of its digits is 104976, while the sum is 42.

The square root of 129923394 is about 11398.3943606106. The cubic root of 129923394 is about 506.4801771156.

The spelling of 129923394 in words is "one hundred twenty-nine million, nine hundred twenty-three thousand, three hundred ninety-four".