129299472 has 60 divisors (see below), whose sum is σ = 362687104. Its totient is φ = 43001280.

The previous prime is 129299447. The next prime is 129299473. The reversal of 129299472 is 274992921.

129299472 is a `hidden beast` number, since 1 + 2 + 92 + 99 + 472 = 666.

It is not an unprimeable number, because it can be changed into a prime (129299473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90153 + ... + 91575.

Almost surely, 2^129299472 is an apocalyptic number.

129299472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129299472 is an abundant number, since it is smaller than the sum of its proper divisors (233387632).

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

129299472 is a wasteful number, since it uses less digits than its factorization.

129299472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2068 (or 2059 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 129299472 is about 11370.9925688130. The cubic root of 129299472 is about 505.6681311074.

The spelling of 129299472 in words is "one hundred twenty-nine million, two hundred ninety-nine thousand, four hundred seventy-two".