12822997 has 4 divisors (see below), whose sum is σ = 13988736. Its totient is φ = 11657260.

The previous prime is 12822989. The next prime is 12823009. The reversal of 12822997 is 79922821.

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, and also an emirpimes, since its reverse is a distinct semiprime: 79922821 = 11 ⋅7265711.

It is a cyclic number.

It is not a de Polignac number, because 12822997 - 2³ = 12822989 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 (12822917) 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, 582853 + ... + 582874.

It is an arithmetic number, because the mean of its divisors is an integer number (3497184).

Almost surely, 2^12822997 is an apocalyptic number.

It is an amenable number.

12822997 is a deficient number, since it is larger than the sum of its proper divisors (1165739).

12822997 is a wasteful number, since it uses less digits than its factorization.

12822997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165738.

The product of its digits is 36288, while the sum is 40.

The square root of 12822997 is about 3580.9212501813. The cubic root of 12822997 is about 234.0614261512.

The spelling of 12822997 in words is "twelve million, eight hundred twenty-two thousand, nine hundred ninety-seven".