12838987 has 4 divisors (see below), whose sum is σ = 14673136. Its totient is φ = 11004840.

The previous prime is 12838979. The next prime is 12838993. The reversal of 12838987 is 78983821.

12838987 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.

It is not a de Polignac number, because 12838987 - 2³ = 12838979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12838907) 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, 917064 + ... + 917077.

It is an arithmetic number, because the mean of its divisors is an integer number (3668284).

Almost surely, 2^12838987 is an apocalyptic number.

12838987 is a deficient number, since it is larger than the sum of its proper divisors (1834149).

12838987 is an equidigital number, since it uses as much as digits as its factorization.

12838987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1834148.

The product of its digits is 193536, while the sum is 46.

The square root of 12838987 is about 3583.1532202796. The cubic root of 12838987 is about 234.1586755856.

The spelling of 12838987 in words is "twelve million, eight hundred thirty-eight thousand, nine hundred eighty-seven".