12971747 has 8 divisors (see below), whose sum is σ = 13582080. Its totient is φ = 12365320.

The previous prime is 12971743. The next prime is 12971797. The reversal of 12971747 is 74717921.

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 12971747 - 2² = 12971743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12971747.

It is not an unprimeable number, because it can be changed into a prime (12971743) 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, 7472 + ... + 9042.

It is an arithmetic number, because the mean of its divisors is an integer number (1697760).

Almost surely, 2^12971747 is an apocalyptic number.

12971747 is a deficient number, since it is larger than the sum of its proper divisors (610333).

12971747 is a wasteful number, since it uses less digits than its factorization.

12971747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1953.

The product of its digits is 24696, while the sum is 38.

The square root of 12971747 is about 3601.6311582393. The cubic root of 12971747 is about 234.9630060976.

The spelling of 12971747 in words is "twelve million, nine hundred seventy-one thousand, seven hundred forty-seven".