12897467 has 4 divisors (see below), whose sum is σ = 14069976. Its totient is φ = 11724960.

The previous prime is 12897449. The next prime is 12897473. The reversal of 12897467 is 76479821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12897467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12897427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 586238 + ... + 586259.

It is an arithmetic number, because the mean of its divisors is an integer number (3517494).

Almost surely, 2^12897467 is an apocalyptic number.

12897467 is a deficient number, since it is larger than the sum of its proper divisors (1172509).

12897467 is a wasteful number, since it uses less digits than its factorization.

12897467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172508.

The product of its digits is 169344, while the sum is 44.

The square root of 12897467 is about 3591.3043591431. The cubic root of 12897467 is about 234.5136584440.

The spelling of 12897467 in words is "twelve million, eight hundred ninety-seven thousand, four hundred sixty-seven".