822260909 has 2 divisors, whose sum is σ = 822260910. Its totient is φ = 822260908.

The previous prime is 822260893. The next prime is 822260941. The reversal of 822260909 is 909062228.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 615188809 + 207072100 = 24803^2 + 14390^2 .

It is a cyclic number.

It is not a de Polignac number, because 822260909 - 2⁴ = 822260893 is a prime.

It is a super-2 number, since 2×822260909² = 1352226004939012562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (822260009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411130454 + 411130455.

It is an arithmetic number, because the mean of its divisors is an integer number (411130455).

Almost surely, 2^822260909 is an apocalyptic number.

It is an amenable number.

822260909 is a deficient number, since it is larger than the sum of its proper divisors (1).

822260909 is an equidigital number, since it uses as much as digits as its factorization.

822260909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 822260909 is about 28675.0921358590. The cubic root of 822260909 is about 936.8496121649.

The spelling of 822260909 in words is "eight hundred twenty-two million, two hundred sixty thousand, nine hundred nine".