12913994 has 16 divisors (see below), whose sum is σ = 20293632. Its totient is φ = 6151728.

The previous prime is 12913991. The next prime is 12914021. The reversal of 12913994 is 49931921.

It is not an unprimeable number, because it can be changed into a prime (12913991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17252 + ... + 17984.

It is an arithmetic number, because the mean of its divisors is an integer number (1268352).

Almost surely, 2^12913994 is an apocalyptic number.

12913994 is a deficient number, since it is larger than the sum of its proper divisors (7379638).

12913994 is a wasteful number, since it uses less digits than its factorization.

12913994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141.

The product of its digits is 17496, while the sum is 38.

The square root of 12913994 is about 3593.6045970585. The cubic root of 12913994 is about 234.6137854149.

The spelling of 12913994 in words is "twelve million, nine hundred thirteen thousand, nine hundred ninety-four".