12886989 has 8 divisors (see below), whose sum is σ = 17647200. Its totient is φ = 8359056.

The previous prime is 12886987. The next prime is 12886999. The reversal of 12886989 is 98968821.

12886989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12886989 - 2¹ = 12886987 is a prime.

It is a super-2 number, since 2×12886989² = 332148970972242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12886987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57939 + ... + 58160.

It is an arithmetic number, because the mean of its divisors is an integer number (2205900).

Almost surely, 2^12886989 is an apocalyptic number.

It is an amenable number.

12886989 is a deficient number, since it is larger than the sum of its proper divisors (4760211).

12886989 is a wasteful number, since it uses less digits than its factorization.

12886989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116139.

The product of its digits is 497664, while the sum is 51.

The square root of 12886989 is about 3589.8452612891. The cubic root of 12886989 is about 234.4501343469.

The spelling of 12886989 in words is "twelve million, eight hundred eighty-six thousand, nine hundred eighty-nine".