12947377 has 4 divisors (see below), whose sum is σ = 12991860. Its totient is φ = 12902896.

The previous prime is 12947351. The next prime is 12947381. The reversal of 12947377 is 77374921.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5527201 + 7420176 = 2351^2 + 2724^2 .

It is a cyclic number.

It is not a de Polignac number, because 12947377 - 2¹⁵ = 12914609 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 not an unprimeable number, because it can be changed into a prime (12947327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21802 + ... + 22387.

It is an arithmetic number, because the mean of its divisors is an integer number (3247965).

Almost surely, 2^12947377 is an apocalyptic number.

It is an amenable number.

12947377 is a deficient number, since it is larger than the sum of its proper divisors (44483).

12947377 is an equidigital number, since it uses as much as digits as its factorization.

12947377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44482.

The product of its digits is 74088, while the sum is 40.

The square root of 12947377 is about 3598.2463784460. The cubic root of 12947377 is about 234.8157723173.

The spelling of 12947377 in words is "twelve million, nine hundred forty-seven thousand, three hundred seventy-seven".