12784969 has 8 divisors (see below), whose sum is σ = 14004360. Its totient is φ = 11617536.

The previous prime is 12784951. The next prime is 12784991. The reversal of 12784969 is 96948721.

It can be written as a sum of positive squares in 4 ways, for example, as 1974025 + 10810944 = 1405^2 + 3288^2 .

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 12784969 - 2¹¹ = 12782921 is a prime.

It is a super-2 number, since 2×12784969² = 326910864661922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12784909) 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, 12474 + ... + 13459.

It is an arithmetic number, because the mean of its divisors is an integer number (1750545).

Almost surely, 2^12784969 is an apocalyptic number.

It is an amenable number.

12784969 is a deficient number, since it is larger than the sum of its proper divisors (1219391).

12784969 is a wasteful number, since it uses less digits than its factorization.

12784969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25979.

The product of its digits is 217728, while the sum is 46.

The square root of 12784969 is about 3575.6075008312. The cubic root of 12784969 is about 233.8298187952.

The spelling of 12784969 in words is "twelve million, seven hundred eighty-four thousand, nine hundred sixty-nine".