921294776317 has 2 divisors, whose sum is σ = 921294776318. Its totient is φ = 921294776316.

The previous prime is 921294776249. The next prime is 921294776351. The reversal of 921294776317 is 713677492129.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 868016442276 + 53278334041 = 931674^2 + 230821^2 .

It is a cyclic number.

It is not a de Polignac number, because 921294776317 - 2²³ = 921286387709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (921294776417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460647388158 + 460647388159.

It is an arithmetic number, because the mean of its divisors is an integer number (460647388159).

Almost surely, 2^921294776317 is an apocalyptic number.

It is an amenable number.

921294776317 is a deficient number, since it is larger than the sum of its proper divisors (1).

921294776317 is an equidigital number, since it uses as much as digits as its factorization.

921294776317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8001504, while the sum is 58.

The spelling of 921294776317 in words is "nine hundred twenty-one billion, two hundred ninety-four million, seven hundred seventy-six thousand, three hundred seventeen".