921352717 has 2 divisors, whose sum is σ = 921352718. Its totient is φ = 921352716.

The previous prime is 921352669. The next prime is 921352727. The reversal of 921352717 is 717253129.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 532040356 + 389312361 = 23066^2 + 19731^2 .

It is a cyclic number.

It is not a de Polignac number, because 921352717 - 2¹¹ = 921350669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (921352727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460676358 + 460676359.

It is an arithmetic number, because the mean of its divisors is an integer number (460676359).

Almost surely, 2^921352717 is an apocalyptic number.

It is an amenable number.

921352717 is a deficient number, since it is larger than the sum of its proper divisors (1).

921352717 is an equidigital number, since it uses as much as digits as its factorization.

921352717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26460, while the sum is 37.

The square root of 921352717 is about 30353.7924648634. The cubic root of 921352717 is about 973.0652730131.

The spelling of 921352717 in words is "nine hundred twenty-one million, three hundred fifty-two thousand, seven hundred seventeen".