12947791 has 8 divisors (see below), whose sum is σ = 13207520. Its totient is φ = 12690432.

The previous prime is 12947789. The next prime is 12947819. The reversal of 12947791 is 19774921.

12947791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12947791 - 2¹ = 12947789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12947731) 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, 13630 + ... + 14548.

It is an arithmetic number, because the mean of its divisors is an integer number (1650940).

Almost surely, 2^12947791 is an apocalyptic number.

12947791 is a deficient number, since it is larger than the sum of its proper divisors (259729).

12947791 is an equidigital number, since it uses as much as digits as its factorization.

12947791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185.

The product of its digits is 31752, while the sum is 40.

The square root of 12947791 is about 3598.3039060091. The cubic root of 12947791 is about 234.8182750815.

The spelling of 12947791 in words is "twelve million, nine hundred forty-seven thousand, seven hundred ninety-one".