129929371 has 8 divisors (see below), whose sum is σ = 152644464. Its totient is φ = 109031520.

The previous prime is 129929363. The next prime is 129929383. The reversal of 129929371 is 173929921.

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

It is not a de Polignac number, because 129929371 - 2³ = 129929363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129929071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 454156 + ... + 454441.

It is an arithmetic number, because the mean of its divisors is an integer number (19080558).

Almost surely, 2^129929371 is an apocalyptic number.

129929371 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

129929371 is a deficient number, since it is larger than the sum of its proper divisors (22715093).

129929371 is a wasteful number, since it uses less digits than its factorization.

129929371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908621.

The product of its digits is 61236, while the sum is 43.

The square root of 129929371 is about 11398.6565436458. The cubic root of 129929371 is about 506.4879437067.

The spelling of 129929371 in words is "one hundred twenty-nine million, nine hundred twenty-nine thousand, three hundred seventy-one".