913217 has 2 divisors, whose sum is σ = 913218. Its totient is φ = 913216.

The previous prime is 913183. The next prime is 913247. The reversal of 913217 is 712319.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 863041 + 50176 = 929^2 + 224^2 .

It is an emirp because it is prime and its reverse (712319) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 913217 - 2¹⁰ = 912193 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 913192 and 913201.

It is not a weakly prime, because it can be changed into another prime (913247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456608 + 456609.

It is an arithmetic number, because the mean of its divisors is an integer number (456609).

2⁹¹³²¹⁷ is an apocalyptic number.

It is an amenable number.

913217 is a deficient number, since it is larger than the sum of its proper divisors (1).

913217 is an equidigital number, since it uses as much as digits as its factorization.

913217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 378, while the sum is 23.

The square root of 913217 is about 955.6238799863. The cubic root of 913217 is about 97.0192685001.

The spelling of 913217 in words is "nine hundred thirteen thousand, two hundred seventeen".