1338217 has 2 divisors, whose sum is σ = 1338218. Its totient is φ = 1338216.

The previous prime is 1338167. The next prime is 1338229. The reversal of 1338217 is 7128331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 952576 + 385641 = 976^2 + 621^2 .

It is a cyclic number.

It is not a de Polignac number, because 1338217 - 2¹¹ = 1336169 is a prime.

1338217 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1338191 and 1338200.

It is not a weakly prime, because it can be changed into another prime (1338247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669108 + 669109.

It is an arithmetic number, because the mean of its divisors is an integer number (669109).

2^1338217 is an apocalyptic number.

It is an amenable number.

1338217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1338217 is an equidigital number, since it uses as much as digits as its factorization.

1338217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 25.

The square root of 1338217 is about 1156.8132952210. The cubic root of 1338217 is about 110.1984571640.

The spelling of 1338217 in words is "one million, three hundred thirty-eight thousand, two hundred seventeen".