129478414 has 8 divisors (see below), whose sum is σ = 209157480. Its totient is φ = 59759256.

The previous prime is 129478411. The next prime is 129478439. The reversal of 129478414 is 414874921.

129478414 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129478411) 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, 2489944 + ... + 2489995.

It is an arithmetic number, because the mean of its divisors is an integer number (26144685).

Almost surely, 2^129478414 is an apocalyptic number.

129478414 is a deficient number, since it is larger than the sum of its proper divisors (79679066).

129478414 is a wasteful number, since it uses less digits than its factorization.

129478414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4979954.

The product of its digits is 64512, while the sum is 40.

The square root of 129478414 is about 11378.8582028251. The cubic root of 129478414 is about 505.9012941036.

The spelling of 129478414 in words is "one hundred twenty-nine million, four hundred seventy-eight thousand, four hundred fourteen".