129099476 has 12 divisors (see below), whose sum is σ = 246462720. Its totient is φ = 58681560.

The previous prime is 129099473. The next prime is 129099511. The reversal of 129099476 is 674990921.

It is a self number, because there is not a number n which added to its sum of digits gives 129099476.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129099473) 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, 1466996 + ... + 1467083.

It is an arithmetic number, because the mean of its divisors is an integer number (20538560).

Almost surely, 2^129099476 is an apocalyptic number.

It is an amenable number.

129099476 is a deficient number, since it is larger than the sum of its proper divisors (117363244).

129099476 is a wasteful number, since it uses less digits than its factorization.

129099476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2934094 (or 2934092 counting only the distinct ones).

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

The square root of 129099476 is about 11362.1950344113. The cubic root of 129099476 is about 505.4072798470.

The spelling of 129099476 in words is "one hundred twenty-nine million, ninety-nine thousand, four hundred seventy-six".