11443897 has 2 divisors, whose sum is σ = 11443898. Its totient is φ = 11443896.

The previous prime is 11443877. The next prime is 11443921. The reversal of 11443897 is 79834411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9916201 + 1527696 = 3149^2 + 1236^2 .

It is an emirp because it is prime and its reverse (79834411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11443897 - 2¹⁹ = 10919609 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11443807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5721948 + 5721949.

It is an arithmetic number, because the mean of its divisors is an integer number (5721949).

Almost surely, 2^11443897 is an apocalyptic number.

It is an amenable number.

11443897 is a deficient number, since it is larger than the sum of its proper divisors (1).

11443897 is an equidigital number, since it uses as much as digits as its factorization.

11443897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 37.

The square root of 11443897 is about 3382.8829421072. The cubic root of 11443897 is about 225.3502167381.

It can be divided in two parts, 1144 and 3897, that added together give a square (5041 = 71²).

The spelling of 11443897 in words is "eleven million, four hundred forty-three thousand, eight hundred ninety-seven".