43997197 has 2 divisors, whose sum is σ = 43997198. Its totient is φ = 43997196.

The previous prime is 43997189. The next prime is 43997243. The reversal of 43997197 is 79179934.

It is a happy number.

43997197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42432196 + 1565001 = 6514^2 + 1251^2 .

It is a cyclic number.

It is not a de Polignac number, because 43997197 - 2³ = 43997189 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43997197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43997117) 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 as a sum of consecutive naturals, namely, 21998598 + 21998599.

It is an arithmetic number, because the mean of its divisors is an integer number (21998599).

Almost surely, 2^43997197 is an apocalyptic number.

It is an amenable number.

43997197 is a deficient number, since it is larger than the sum of its proper divisors (1).

43997197 is an equidigital number, since it uses as much as digits as its factorization.

43997197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 428652, while the sum is 49.

The square root of 43997197 is about 6633.0382932710. The cubic root of 43997197 is about 353.0273367322.

The spelling of 43997197 in words is "forty-three million, nine hundred ninety-seven thousand, one hundred ninety-seven".