129092988 has 12 divisors (see below), whose sum is σ = 301217000. Its totient is φ = 43030992.

The previous prime is 129092983. The next prime is 129092989. The reversal of 129092988 is 889290921.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129092983) by changing a digit.

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, 5378863 + ... + 5378886.

Almost surely, 2^129092988 is an apocalyptic number.

It is an amenable number.

129092988 is an abundant number, since it is smaller than the sum of its proper divisors (172124012).

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

129092988 is a wasteful number, since it uses less digits than its factorization.

129092988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10757756 (or 10757754 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 48.

The square root of 129092988 is about 11361.9095226111. The cubic root of 129092988 is about 505.3988131528.

The spelling of 129092988 in words is "one hundred twenty-nine million, ninety-two thousand, nine hundred eighty-eight".