12169729 has 8 divisors (see below), whose sum is σ = 14297472. Its totient is φ = 10212240.

The previous prime is 12169727. The next prime is 12169819. The reversal of 12169729 is 92796121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12169729 - 2¹ = 12169727 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12169727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42409 + ... + 42694.

It is an arithmetic number, because the mean of its divisors is an integer number (1787184).

Almost surely, 2^12169729 is an apocalyptic number.

It is an amenable number.

12169729 is a deficient number, since it is larger than the sum of its proper divisors (2127743).

12169729 is a wasteful number, since it uses less digits than its factorization.

12169729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85127.

The product of its digits is 13608, while the sum is 37.

The square root of 12169729 is about 3488.5138669640. The cubic root of 12169729 is about 230.0171946817.

The spelling of 12169729 in words is "twelve million, one hundred sixty-nine thousand, seven hundred twenty-nine".