11443997 has 2 divisors, whose sum is σ = 11443998. Its totient is φ = 11443996.

The previous prime is 11443987. The next prime is 11444003. The reversal of 11443997 is 79934411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10374841 + 1069156 = 3221^2 + 1034^2 .

It is a cyclic number.

It is not a de Polignac number, because 11443997 - 2⁴ = 11443981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11443997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11443937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5721998 + 5721999.

It is an arithmetic number, because the mean of its divisors is an integer number (5721999).

Almost surely, 2^11443997 is an apocalyptic number.

It is an amenable number.

11443997 is a deficient number, since it is larger than the sum of its proper divisors (1).

11443997 is an equidigital number, since it uses as much as digits as its factorization.

11443997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 38.

The square root of 11443997 is about 3382.8977223676. The cubic root of 11443997 is about 225.3508731275.

The spelling of 11443997 in words is "eleven million, four hundred forty-three thousand, nine hundred ninety-seven".