129869092 has 12 divisors (see below), whose sum is σ = 229282956. Its totient is φ = 64359680.

The previous prime is 129869087. The next prime is 129869107. The reversal of 129869092 is 290968921.

It can be written as a sum of positive squares in 2 ways, for example, as 72352036 + 57517056 = 8506^2 + 7584^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143209 + ... + 144112.

It is an arithmetic number, because the mean of its divisors is an integer number (19106913).

Almost surely, 2^129869092 is an apocalyptic number.

It is an amenable number.

129869092 is a deficient number, since it is larger than the sum of its proper divisors (99413864).

129869092 is a wasteful number, since it uses less digits than its factorization.

129869092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287438 (or 287436 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 129869092 is about 11396.0121095057. The cubic root of 129869092 is about 506.4096054804.

It can be divided in two parts, 129 and 869092, that added together give a triangular number (869221 = T₁₃₁₈).

The spelling of 129869092 in words is "one hundred twenty-nine million, eight hundred sixty-nine thousand, ninety-two".