12689469 has 12 divisors (see below), whose sum is σ = 19739356. Its totient is φ = 7808832.

The previous prime is 12689423. The next prime is 12689477. The reversal of 12689469 is 96498621.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6563844 + 6125625 = 2562^2 + 2475^2 .

It is not a de Polignac number, because 12689469 - 2¹⁷ = 12558397 is a prime.

It is a super-2 number, since 2×12689469² = 322045247003922, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12689069) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54112 + ... + 54345.

Almost surely, 2^12689469 is an apocalyptic number.

It is an amenable number.

12689469 is a deficient number, since it is larger than the sum of its proper divisors (7049887).

12689469 is a wasteful number, since it uses less digits than its factorization.

12689469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108476 (or 108473 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 12689469 is about 3562.2280948867. The cubic root of 12689469 is about 233.2461495144.

The spelling of 12689469 in words is "twelve million, six hundred eighty-nine thousand, four hundred sixty-nine".