1217417 has 2 divisors, whose sum is σ = 1217418. Its totient is φ = 1217416.

The previous prime is 1217407. The next prime is 1217423. The reversal of 1217417 is 7147121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 942841 + 274576 = 971^2 + 524^2 .

It is an emirp because it is prime and its reverse (7147121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1217417 - 2¹⁰ = 1216393 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1217392 and 1217401.

It is not a weakly prime, because it can be changed into another prime (1217407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608708 + 608709.

It is an arithmetic number, because the mean of its divisors is an integer number (608709).

2^1217417 is an apocalyptic number.

It is an amenable number.

1217417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1217417 is an equidigital number, since it uses as much as digits as its factorization.

1217417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 392, while the sum is 23.

The square root of 1217417 is about 1103.3662130045. The cubic root of 1217417 is about 106.7775095605. Note that the first 3 decimals are identical.

The spelling of 1217417 in words is "one million, two hundred seventeen thousand, four hundred seventeen".