12857469 has 8 divisors (see below), whose sum is σ = 17734560. Its totient is φ = 8276016.

The previous prime is 12857443. The next prime is 12857489. The reversal of 12857469 is 96475821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-12857469 is a prime.

It is a super-2 number, since 2×12857469² = 330629018171922, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12857469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12857489) 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 7 ways as a sum of consecutive naturals, for example, 73807 + ... + 73980.

It is an arithmetic number, because the mean of its divisors is an integer number (2216820).

Almost surely, 2^12857469 is an apocalyptic number.

It is an amenable number.

12857469 is a deficient number, since it is larger than the sum of its proper divisors (4877091).

12857469 is a wasteful number, since it uses less digits than its factorization.

12857469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147819.

The product of its digits is 120960, while the sum is 42.

The square root of 12857469 is about 3585.7313061634. The cubic root of 12857469 is about 234.2709805435.

The spelling of 12857469 in words is "twelve million, eight hundred fifty-seven thousand, four hundred sixty-nine".