913228717 has 2 divisors, whose sum is σ = 913228718. Its totient is φ = 913228716.

The previous prime is 913228681. The next prime is 913228739. The reversal of 913228717 is 717822319.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 912402436 + 826281 = 30206^2 + 909^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-913228717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 913228717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (913228417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456614358 + 456614359.

It is an arithmetic number, because the mean of its divisors is an integer number (456614359).

Almost surely, 2^913228717 is an apocalyptic number.

It is an amenable number.

913228717 is a deficient number, since it is larger than the sum of its proper divisors (1).

913228717 is an equidigital number, since it uses as much as digits as its factorization.

913228717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 40.

The square root of 913228717 is about 30219.6743364319. The cubic root of 913228717 is about 970.1968343246.

The spelling of 913228717 in words is "nine hundred thirteen million, two hundred twenty-eight thousand, seven hundred seventeen".