12975447 has 4 divisors (see below), whose sum is σ = 17300600. Its totient is φ = 8650296.

The previous prime is 12975439. The next prime is 12975467. The reversal of 12975447 is 74457921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74457921 = 3 ⋅24819307.

It is not a de Polignac number, because 12975447 - 2³ = 12975439 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 (12975467) 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, 2162572 + ... + 2162577.

It is an arithmetic number, because the mean of its divisors is an integer number (4325150).

Almost surely, 2^12975447 is an apocalyptic number.

12975447 is a deficient number, since it is larger than the sum of its proper divisors (4325153).

12975447 is an equidigital number, since it uses as much as digits as its factorization.

12975447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4325152.

The product of its digits is 70560, while the sum is 39.

The square root of 12975447 is about 3602.1447777678. The cubic root of 12975447 is about 234.9853438875.

The spelling of 12975447 in words is "twelve million, nine hundred seventy-five thousand, four hundred forty-seven".