12884989 has 8 divisors (see below), whose sum is σ = 14138712. Its totient is φ = 11668800.

The previous prime is 12884959. The next prime is 12885001. The reversal of 12884989 is 98948821.

It can be written as a sum of positive squares in 4 ways, for example, as 225625 + 12659364 = 475^2 + 3558^2 .

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

It is not a de Polignac number, because 12884989 - 2²¹ = 10787837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12884939) 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, 8662 + ... + 10039.

It is an arithmetic number, because the mean of its divisors is an integer number (1767339).

Almost surely, 2^12884989 is an apocalyptic number.

It is an amenable number.

12884989 is a deficient number, since it is larger than the sum of its proper divisors (1253723).

12884989 is a wasteful number, since it uses less digits than its factorization.

12884989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18767.

The product of its digits is 331776, while the sum is 49.

The square root of 12884989 is about 3589.5666869415. The cubic root of 12884989 is about 234.4380052005.

The spelling of 12884989 in words is "twelve million, eight hundred eighty-four thousand, nine hundred eighty-nine".