12989392 has 40 divisors (see below), whose sum is σ = 27326376. Its totient is φ = 5945856.

The previous prime is 12989387. The next prime is 12989429. The reversal of 12989392 is 29398921.

It can be written as a sum of positive squares in 4 ways, for example, as 767376 + 12222016 = 876^2 + 3496^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 40818 + ... + 41134.

Almost surely, 2^12989392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12989392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13663188).

12989392 is an abundant number, since it is smaller than the sum of its proper divisors (14336984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12989392 is a wasteful number, since it uses less digits than its factorization.

12989392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535 (or 529 counting only the distinct ones).

The product of its digits is 69984, while the sum is 43.

The square root of 12989392 is about 3604.0799103239. The cubic root of 12989392 is about 235.0694950646.

The spelling of 12989392 in words is "twelve million, nine hundred eighty-nine thousand, three hundred ninety-two".