12887769 has 4 divisors (see below), whose sum is σ = 17183696. Its totient is φ = 8591844.

The previous prime is 12887767. The next prime is 12887773. The reversal of 12887769 is 96778821.

12887769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12887769 - 2¹ = 12887767 is a prime.

It is a super-2 number, since 2×12887769² = 332189179594722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12887761) 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, 2147959 + ... + 2147964.

It is an arithmetic number, because the mean of its divisors is an integer number (4295924).

Almost surely, 2^12887769 is an apocalyptic number.

It is an amenable number.

12887769 is a deficient number, since it is larger than the sum of its proper divisors (4295927).

12887769 is an equidigital number, since it uses as much as digits as its factorization.

12887769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4295926.

The product of its digits is 338688, while the sum is 48.

The square root of 12887769 is about 3589.9538994255. The cubic root of 12887769 is about 234.4548643739.

The spelling of 12887769 in words is "twelve million, eight hundred eighty-seven thousand, seven hundred sixty-nine".