12908961 has 24 divisors (see below), whose sum is σ = 21141120. Its totient is φ = 7524576.

The previous prime is 12908953. The next prime is 12908963. The reversal of 12908961 is 16980921.

12908961 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12908961 - 2³ = 12908953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12908963) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 681 + ... + 5126.

It is an arithmetic number, because the mean of its divisors is an integer number (880880).

Almost surely, 2^12908961 is an apocalyptic number.

It is an amenable number.

12908961 is a deficient number, since it is larger than the sum of its proper divisors (8232159).

12908961 is a wasteful number, since it uses less digits than its factorization.

12908961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5845 (or 5842 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 12908961 is about 3592.9042570044. The cubic root of 12908961 is about 234.5833026013.

The spelling of 12908961 in words is "twelve million, nine hundred eight thousand, nine hundred sixty-one".