12909408 has 48 divisors (see below), whose sum is σ = 35063280. Its totient is φ = 4153856.

The previous prime is 12909397. The next prime is 12909427. The reversal of 12909408 is 80490921.

12909408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 466 + ... + 5102.

It is an arithmetic number, because the mean of its divisors is an integer number (730485).

Almost surely, 2^12909408 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 12909408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17531640).

12909408 is an abundant number, since it is smaller than the sum of its proper divisors (22153872).

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

12909408 is a wasteful number, since it uses less digits than its factorization.

12909408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4679 (or 4671 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 12909408 is about 3592.9664624096. The cubic root of 12909408 is about 234.5860102172.

The spelling of 12909408 in words is "twelve million, nine hundred nine thousand, four hundred eight".