129903696 has 80 divisors (see below), whose sum is σ = 401571520. Its totient is φ = 39968640.

The previous prime is 129903679. The next prime is 129903743. The reversal of 129903696 is 696309921.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5950 + ... + 17181.

It is an arithmetic number, because the mean of its divisors is an integer number (5019644).

Almost surely, 2^129903696 is an apocalyptic number.

129903696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

129903696 is an abundant number, since it is smaller than the sum of its proper divisors (271667824).

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

129903696 is a wasteful number, since it uses less digits than its factorization.

129903696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23161 (or 23149 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The square root of 129903696 is about 11397.5302587885. The cubic root of 129903696 is about 506.4545795937.

The spelling of 129903696 in words is "one hundred twenty-nine million, nine hundred three thousand, six hundred ninety-six".