12669489 has 18 divisors (see below), whose sum is σ = 21288930. Its totient is φ = 7239456.

The previous prime is 12669487. The next prime is 12669493. The reversal of 12669489 is 98496621.

It is a happy number.

12669489 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10188864 + 2480625 = 3192^2 + 1575^2 .

It is not a de Polignac number, because 12669489 - 2¹ = 12669487 is a prime.

It is a super-2 number, since 2×12669489² = 321031903042242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12669487) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 13924 + ... + 14805.

Almost surely, 2^12669489 is an apocalyptic number.

It is an amenable number.

12669489 is a deficient number, since it is larger than the sum of its proper divisors (8619441).

12669489 is a wasteful number, since it uses less digits than its factorization.

12669489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28749 (or 28739 counting only the distinct ones).

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

The square root of 12669489 is about 3559.4225655294. The cubic root of 12669489 is about 233.1236672125.

The spelling of 12669489 in words is "twelve million, six hundred sixty-nine thousand, four hundred eighty-nine".