8227390081 has 2 divisors, whose sum is σ = 8227390082. Its totient is φ = 8227390080.

The previous prime is 8227390063. The next prime is 8227390121. The reversal of 8227390081 is 1800937228.

It is an a-pointer prime, because the next prime (8227390121) can be obtained adding 8227390081 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8160412225 + 66977856 = 90335^2 + 8184^2 .

It is a cyclic number.

It is not a de Polignac number, because 8227390081 - 2¹¹ = 8227388033 is a prime.

It is a super-2 number, since 2×8227390081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8227390481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4113695040 + 4113695041.

It is an arithmetic number, because the mean of its divisors is an integer number (4113695041).

Almost surely, 2^8227390081 is an apocalyptic number.

It is an amenable number.

8227390081 is a deficient number, since it is larger than the sum of its proper divisors (1).

8227390081 is an equidigital number, since it uses as much as digits as its factorization.

8227390081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 8227390081 is about 90704.9617220580. The cubic root of 8227390081 is about 2018.7724202464.

The spelling of 8227390081 in words is "eight billion, two hundred twenty-seven million, three hundred ninety thousand, eighty-one".