12984569 has 4 divisors (see below), whose sum is σ = 13983396. Its totient is φ = 11985744.

The previous prime is 12984563. The next prime is 12984571. The reversal of 12984569 is 96548921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96548921 = 7 ⋅13792703.

It can be written as a sum of positive squares in 2 ways, for example, as 8340544 + 4644025 = 2888^2 + 2155^2 .

It is a cyclic number.

It is not a de Polignac number, because 12984569 - 2⁴ = 12984553 is a prime.

It is a super-2 number, since 2×12984569² = 337198064231522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12984563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499394 + ... + 499419.

It is an arithmetic number, because the mean of its divisors is an integer number (3495849).

Almost surely, 2^12984569 is an apocalyptic number.

It is an amenable number.

12984569 is a deficient number, since it is larger than the sum of its proper divisors (998827).

12984569 is an equidigital number, since it uses as much as digits as its factorization.

12984569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998826.

The product of its digits is 155520, while the sum is 44.

The square root of 12984569 is about 3603.4107453911. The cubic root of 12984569 is about 235.0403974613.

The spelling of 12984569 in words is "twelve million, nine hundred eighty-four thousand, five hundred sixty-nine".