129691092 has 12 divisors (see below), whose sum is σ = 302612576. Its totient is φ = 43230360.

The previous prime is 129691033. The next prime is 129691109. The reversal of 129691092 is 290196921.

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

It is a self number, because there is not a number n which added to its sum of digits gives 129691092.

It is a congruent number.

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, 5403784 + ... + 5403807.

Almost surely, 2^129691092 is an apocalyptic number.

129691092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129691092 is an abundant number, since it is smaller than the sum of its proper divisors (172921484).

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

129691092 is a wasteful number, since it uses less digits than its factorization.

129691092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10807598 (or 10807596 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 129691092 is about 11388.1996821271. The cubic root of 129691092 is about 506.1781361793.

The spelling of 129691092 in words is "one hundred twenty-nine million, six hundred ninety-one thousand, ninety-two".