12887249 has 4 divisors (see below), whose sum is σ = 13079664. Its totient is φ = 12694836.

The previous prime is 12887239. The next prime is 12887261. The reversal of 12887249 is 94278821.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12887249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12887219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96107 + ... + 96240.

It is an arithmetic number, because the mean of its divisors is an integer number (3269916).

Almost surely, 2^12887249 is an apocalyptic number.

It is an amenable number.

12887249 is a deficient number, since it is larger than the sum of its proper divisors (192415).

12887249 is an equidigital number, since it uses as much as digits as its factorization.

12887249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192414.

The product of its digits is 64512, while the sum is 41.

The square root of 12887249 is about 3589.8814743665. The cubic root of 12887249 is about 234.4517110438.

The spelling of 12887249 in words is "twelve million, eight hundred eighty-seven thousand, two hundred forty-nine".