129904088 has 8 divisors (see below), whose sum is σ = 243570180. Its totient is φ = 64952040.

The previous prime is 129904087. The next prime is 129904111. The reversal of 129904088 is 880409921.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×129904088² = 33750144158223488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129904087) 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 as a sum of consecutive naturals, namely, 8118998 + ... + 8119013.

Almost surely, 2^129904088 is an apocalyptic number.

It is an amenable number.

129904088 is a deficient number, since it is larger than the sum of its proper divisors (113666092).

129904088 is a wasteful number, since it uses less digits than its factorization.

129904088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16238017 (or 16238013 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 129904088 is about 11397.5474554836. The cubic root of 129904088 is about 506.4550890224.

The spelling of 129904088 in words is "one hundred twenty-nine million, nine hundred four thousand, eighty-eight".