12918897 has 12 divisors (see below), whose sum is σ = 18751824. Its totient is φ = 8570520.

The previous prime is 12918889. The next prime is 12918901. The reversal of 12918897 is 79881921.

It is not a de Polignac number, because 12918897 - 2³ = 12918889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12918887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1503 + ... + 5300.

It is an arithmetic number, because the mean of its divisors is an integer number (1562652).

Almost surely, 2^12918897 is an apocalyptic number.

It is an amenable number.

12918897 is a deficient number, since it is larger than the sum of its proper divisors (5832927).

12918897 is a wasteful number, since it uses less digits than its factorization.

12918897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7020 (or 7017 counting only the distinct ones).

The product of its digits is 72576, while the sum is 45.

The square root of 12918897 is about 3594.2867164432. The cubic root of 12918897 is about 234.6434732569.

The spelling of 12918897 in words is "twelve million, nine hundred eighteen thousand, eight hundred ninety-seven".