12195729 has 24 divisors (see below), whose sum is σ = 21682752. Its totient is φ = 6432480.

The previous prime is 12195719. The next prime is 12195731. The reversal of 12195729 is 92759121.

12195729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12195729 - 2⁵ = 12195697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12195693 and 12195702.

It is not an unprimeable number, because it can be changed into a prime (12195719) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6627 + ... + 8264.

It is an arithmetic number, because the mean of its divisors is an integer number (903448).

Almost surely, 2^12195729 is an apocalyptic number.

It is an amenable number.

12195729 is a deficient number, since it is larger than the sum of its proper divisors (9487023).

12195729 is a wasteful number, since it uses less digits than its factorization.

12195729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14917 (or 14914 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The square root of 12195729 is about 3492.2383939244. The cubic root of 12195729 is about 230.1808848000.

The spelling of 12195729 in words is "twelve million, one hundred ninety-five thousand, seven hundred twenty-nine".