12943489 has 8 divisors (see below), whose sum is σ = 13988072. Its totient is φ = 11905920.

The previous prime is 12943487. The next prime is 12943499. The reversal of 12943489 is 98434921.

It can be written as a sum of positive squares in 4 ways, for example, as 2053489 + 10890000 = 1433^2 + 3300^2 .

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

It is not a de Polignac number, because 12943489 - 2¹ = 12943487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12943487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2479 + ... + 5659.

It is an arithmetic number, because the mean of its divisors is an integer number (1748509).

Almost surely, 2^12943489 is an apocalyptic number.

It is an amenable number.

12943489 is a deficient number, since it is larger than the sum of its proper divisors (1044583).

12943489 is a wasteful number, since it uses less digits than its factorization.

12943489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3507.

The product of its digits is 62208, while the sum is 40.

The square root of 12943489 is about 3597.7060747093. The cubic root of 12943489 is about 234.7922654936.

The spelling of 12943489 in words is "twelve million, nine hundred forty-three thousand, four hundred eighty-nine".