12909876 has 24 divisors (see below), whose sum is σ = 34426560. Its totient is φ = 3688512.

The previous prime is 12909839. The next prime is 12909887. The reversal of 12909876 is 67890921.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76761 + ... + 76928.

It is an arithmetic number, because the mean of its divisors is an integer number (1434440).

Almost surely, 2^12909876 is an apocalyptic number.

It is an amenable number.

12909876 is an abundant number, since it is smaller than the sum of its proper divisors (21516684).

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

12909876 is a wasteful number, since it uses less digits than its factorization.

12909876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153703 (or 153701 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 12909876 is about 3593.0315890624. The cubic root of 12909876 is about 234.5888449696.

The spelling of 12909876 in words is "twelve million, nine hundred nine thousand, eight hundred seventy-six".