12916947 has 4 divisors (see below), whose sum is σ = 17222600. Its totient is φ = 8611296.

The previous prime is 12916931. The next prime is 12916951. The reversal of 12916947 is 74961921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74961921 = 3 ⋅24987307.

It is not a de Polignac number, because 12916947 - 2⁴ = 12916931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12916907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2152822 + ... + 2152827.

It is an arithmetic number, because the mean of its divisors is an integer number (4305650).

Almost surely, 2^12916947 is an apocalyptic number.

12916947 is a deficient number, since it is larger than the sum of its proper divisors (4305653).

12916947 is an equidigital number, since it uses as much as digits as its factorization.

12916947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4305652.

The product of its digits is 27216, while the sum is 39.

The square root of 12916947 is about 3594.0154423708. The cubic root of 12916947 is about 234.6316668363.

The spelling of 12916947 in words is "twelve million, nine hundred sixteen thousand, nine hundred forty-seven".