12887169 has 4 divisors (see below), whose sum is σ = 17182896. Its totient is φ = 8591444.

The previous prime is 12887167. The next prime is 12887177. The reversal of 12887169 is 96178821.

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, and also an emirpimes, since its reverse is a distinct semiprime: 96178821 = 3 ⋅32059607.

It is a cyclic number.

It is not a de Polignac number, because 12887169 - 2¹ = 12887167 is a prime.

It is a super-2 number, since 2×12887169² = 332158249669122, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12887169.

It is not an unprimeable number, because it can be changed into a prime (12887167) 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, 2147859 + ... + 2147864.

It is an arithmetic number, because the mean of its divisors is an integer number (4295724).

Almost surely, 2^12887169 is an apocalyptic number.

It is an amenable number.

12887169 is a deficient number, since it is larger than the sum of its proper divisors (4295727).

12887169 is an equidigital number, since it uses as much as digits as its factorization.

12887169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4295726.

The product of its digits is 48384, while the sum is 42.

The square root of 12887169 is about 3589.8703319201. The cubic root of 12887169 is about 234.4512259085.

The spelling of 12887169 in words is "twelve million, eight hundred eighty-seven thousand, one hundred sixty-nine".