12972797 has 4 divisors (see below), whose sum is σ = 13001280. Its totient is φ = 12944316.

The previous prime is 12972781. The next prime is 12972803. The reversal of 12972797 is 79727921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12972797 - 2⁴ = 12972781 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 (12972737) 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, 13547 + ... + 14472.

It is an arithmetic number, because the mean of its divisors is an integer number (3250320).

Almost surely, 2^12972797 is an apocalyptic number.

It is an amenable number.

12972797 is a deficient number, since it is larger than the sum of its proper divisors (28483).

12972797 is an equidigital number, since it uses as much as digits as its factorization.

12972797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28482.

The product of its digits is 111132, while the sum is 44.

The square root of 12972797 is about 3601.7769225759. The cubic root of 12972797 is about 234.9693456318.

The spelling of 12972797 in words is "twelve million, nine hundred seventy-two thousand, seven hundred ninety-seven".