12881397 has 4 divisors (see below), whose sum is σ = 17175200. Its totient is φ = 8587596.

The previous prime is 12881387. The next prime is 12881417. The reversal of 12881397 is 79318821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12881397 - 2¹² = 12877301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12881347) 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, 2146897 + ... + 2146902.

It is an arithmetic number, because the mean of its divisors is an integer number (4293800).

Almost surely, 2^12881397 is an apocalyptic number.

It is an amenable number.

12881397 is a deficient number, since it is larger than the sum of its proper divisors (4293803).

12881397 is an equidigital number, since it uses as much as digits as its factorization.

12881397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4293802.

The product of its digits is 24192, while the sum is 39.

The square root of 12881397 is about 3589.0663131238. The cubic root of 12881397 is about 234.4162181019.

The spelling of 12881397 in words is "twelve million, eight hundred eighty-one thousand, three hundred ninety-seven".