129616796 has 12 divisors (see below), whose sum is σ = 228486048. Its totient is φ = 64335072.

The previous prime is 129616787. The next prime is 129616807. The reversal of 129616796 is 697616921.

It is a self number, because there is not a number n which added to its sum of digits gives 129616796.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117716 + ... + 118811.

It is an arithmetic number, because the mean of its divisors is an integer number (19040504).

Almost surely, 2^129616796 is an apocalyptic number.

It is an amenable number.

129616796 is a deficient number, since it is larger than the sum of its proper divisors (98869252).

129616796 is a wasteful number, since it uses less digits than its factorization.

129616796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236668 (or 236666 counting only the distinct ones).

The product of its digits is 244944, while the sum is 47.

The square root of 129616796 is about 11384.9372418121. The cubic root of 129616796 is about 506.0814598031.

The spelling of 129616796 in words is "one hundred twenty-nine million, six hundred sixteen thousand, seven hundred ninety-six".