12947369 has 4 divisors (see below), whose sum is σ = 13393860. Its totient is φ = 12500880.

The previous prime is 12947351. The next prime is 12947381. The reversal of 12947369 is 96374921.

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 5040025 + 7907344 = 2245^2 + 2812^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12947369 is a prime.

It is a super-2 number, since 2×12947369² = 335268728044322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12947329) 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, 223202 + ... + 223259.

It is an arithmetic number, because the mean of its divisors is an integer number (3348465).

Almost surely, 2^12947369 is an apocalyptic number.

It is an amenable number.

12947369 is a deficient number, since it is larger than the sum of its proper divisors (446491).

12947369 is an equidigital number, since it uses as much as digits as its factorization.

12947369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446490.

The product of its digits is 81648, while the sum is 41.

The square root of 12947369 is about 3598.2452667932. The cubic root of 12947369 is about 234.8157239542.

The spelling of 12947369 in words is "twelve million, nine hundred forty-seven thousand, three hundred sixty-nine".