12169569 has 16 divisors (see below), whose sum is σ = 17549568. Its totient is φ = 7471872.

The previous prime is 12169567. The next prime is 12169571. The reversal of 12169569 is 96596121.

12169569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12169567) and next prime (12169571).

It is not a de Polignac number, because 12169569 - 2¹ = 12169567 is a prime.

It is a super-2 number, since 2×12169569² = 296196819291522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12169567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142 + ... + 4935.

It is an arithmetic number, because the mean of its divisors is an integer number (1096848).

Almost surely, 2^12169569 is an apocalyptic number.

It is an amenable number.

12169569 is a deficient number, since it is larger than the sum of its proper divisors (5379999).

12169569 is a wasteful number, since it uses less digits than its factorization.

12169569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5144.

The product of its digits is 29160, while the sum is 39.

The square root of 12169569 is about 3488.4909344873. The cubic root of 12169569 is about 230.0161866365.

The spelling of 12169569 in words is "twelve million, one hundred sixty-nine thousand, five hundred sixty-nine".