12943894 has 16 divisors (see below), whose sum is σ = 20694528. Its totient is φ = 6057832.

The previous prime is 12943873. The next prime is 12943901. The reversal of 12943894 is 49834921.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 832 + ... + 5155.

It is an arithmetic number, because the mean of its divisors is an integer number (1293408).

Almost surely, 2^12943894 is an apocalyptic number.

12943894 is a deficient number, since it is larger than the sum of its proper divisors (7750634).

12943894 is a wasteful number, since it uses less digits than its factorization.

12943894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6059.

The product of its digits is 62208, while the sum is 40.

The square root of 12943894 is about 3597.7623601344. The cubic root of 12943894 is about 234.7947143407.

The spelling of 12943894 in words is "twelve million, nine hundred forty-three thousand, eight hundred ninety-four".