12946783 has 4 divisors (see below), whose sum is σ = 13166280. Its totient is φ = 12727288.

The previous prime is 12946777. The next prime is 12946799. The reversal of 12946783 is 38764921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12946783 - 2⁵ = 12946751 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12946183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109660 + ... + 109777.

It is an arithmetic number, because the mean of its divisors is an integer number (3291570).

Almost surely, 2^12946783 is an apocalyptic number.

12946783 is a deficient number, since it is larger than the sum of its proper divisors (219497).

12946783 is an equidigital number, since it uses as much as digits as its factorization.

12946783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219496.

The product of its digits is 72576, while the sum is 40.

The square root of 12946783 is about 3598.1638372926. The cubic root of 12946783 is about 234.8121813016.

The spelling of 12946783 in words is "twelve million, nine hundred forty-six thousand, seven hundred eighty-three".