12919866 has 16 divisors (see below), whose sum is σ = 26441184. Its totient is φ = 4206384.

The previous prime is 12919853. The next prime is 12919871. The reversal of 12919866 is 66891921.

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, 24781 + ... + 25296.

It is an arithmetic number, because the mean of its divisors is an integer number (1652574).

Almost surely, 2^12919866 is an apocalyptic number.

12919866 is an abundant number, since it is smaller than the sum of its proper divisors (13521318).

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

12919866 is a wasteful number, since it uses less digits than its factorization.

12919866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50125.

The product of its digits is 46656, while the sum is 42.

The square root of 12919866 is about 3594.4215111753. The cubic root of 12919866 is about 234.6493396979.

The spelling of 12919866 in words is "twelve million, nine hundred nineteen thousand, eight hundred sixty-six".