129090716 has 24 divisors (see below), whose sum is σ = 235433520. Its totient is φ = 61857152.

The previous prime is 129090671. The next prime is 129090721. The reversal of 129090716 is 617090921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11831 + ... + 19953.

It is an arithmetic number, because the mean of its divisors is an integer number (9809730).

Almost surely, 2^129090716 is an apocalyptic number.

It is an amenable number.

129090716 is a deficient number, since it is larger than the sum of its proper divisors (106342804).

129090716 is a wasteful number, since it uses less digits than its factorization.

129090716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8293 (or 8291 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 129090716 is about 11361.8095389775. The cubic root of 129090716 is about 505.3958481768.

The spelling of 129090716 in words is "one hundred twenty-nine million, ninety thousand, seven hundred sixteen".