12918297 has 16 divisors (see below), whose sum is σ = 19768320. Its totient is φ = 7350672.

The previous prime is 12918293. The next prime is 12918319. The reversal of 12918297 is 79281921.

It is not a de Polignac number, because 12918297 - 2² = 12918293 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12918293) 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 15 ways as a sum of consecutive naturals, for example, 4354 + ... + 6692.

It is an arithmetic number, because the mean of its divisors is an integer number (1235520).

Almost surely, 2^12918297 is an apocalyptic number.

It is an amenable number.

12918297 is a deficient number, since it is larger than the sum of its proper divisors (6850023).

12918297 is a wasteful number, since it uses less digits than its factorization.

12918297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2612.

The product of its digits is 18144, while the sum is 39.

The square root of 12918297 is about 3594.2032496786. The cubic root of 12918297 is about 234.6398406386.

The spelling of 12918297 in words is "twelve million, nine hundred eighteen thousand, two hundred ninety-seven".