822000997 has 2 divisors, whose sum is σ = 822000998. Its totient is φ = 822000996.

The previous prime is 822000919. The next prime is 822001003. The reversal of 822000997 is 799000228.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 483956001 + 338044996 = 21999^2 + 18386^2 .

It is a cyclic number.

It is not a de Polignac number, because 822000997 - 2⁷ = 822000869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (822000497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411000498 + 411000499.

It is an arithmetic number, because the mean of its divisors is an integer number (411000499).

Almost surely, 2^822000997 is an apocalyptic number.

It is an amenable number.

822000997 is a deficient number, since it is larger than the sum of its proper divisors (1).

822000997 is an equidigital number, since it uses as much as digits as its factorization.

822000997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 822000997 is about 28670.5597608418. The cubic root of 822000997 is about 936.7508908165.

The spelling of 822000997 in words is "eight hundred twenty-two million, nine hundred ninety-seven", and thus it is an aban number.