1143817 has 2 divisors, whose sum is σ = 1143818. Its totient is φ = 1143816.

The previous prime is 1143809. The next prime is 1143829. The reversal of 1143817 is 7183411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 968256 + 175561 = 984^2 + 419^2 .

It is an emirp because it is prime and its reverse (7183411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1143817 - 2³ = 1143809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1143791 and 1143800.

It is not a weakly prime, because it can be changed into another prime (1143887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571908 + 571909.

It is an arithmetic number, because the mean of its divisors is an integer number (571909).

2^1143817 is an apocalyptic number.

It is an amenable number.

1143817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143817 is an equidigital number, since it uses as much as digits as its factorization.

1143817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 25.

The square root of 1143817 is about 1069.4938054987. The cubic root of 1143817 is about 104.5808536137.

The spelling of 1143817 in words is "one million, one hundred forty-three thousand, eight hundred seventeen".