12938289 has 32 divisors (see below), whose sum is σ = 21525504. Its totient is φ = 6730560.

The previous prime is 12938281. The next prime is 12938291. The reversal of 12938289 is 98283921.

It is not a de Polignac number, because 12938289 - 2³ = 12938281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12938289.

It is not an unprimeable number, because it can be changed into a prime (12938281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22374 + ... + 22944.

It is an arithmetic number, because the mean of its divisors is an integer number (672672).

Almost surely, 2^12938289 is an apocalyptic number.

It is an amenable number.

12938289 is a deficient number, since it is larger than the sum of its proper divisors (8587215).

12938289 is a wasteful number, since it uses less digits than its factorization.

12938289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677.

The product of its digits is 62208, while the sum is 42.

The square root of 12938289 is about 3596.9833193942. The cubic root of 12938289 is about 234.7608189669.

The spelling of 12938289 in words is "twelve million, nine hundred thirty-eight thousand, two hundred eighty-nine".