9027720049 has 2 divisors, whose sum is σ = 9027720050. Its totient is φ = 9027720048.

The previous prime is 9027720047. The next prime is 9027720061. The reversal of 9027720049 is 9400277209.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4641969424 + 4385750625 = 68132^2 + 66225^2 .

It is a cyclic number.

It is not a de Polignac number, because 9027720049 - 2¹ = 9027720047 is a prime.

Together with 9027720047, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 9027719993 and 9027720020.

It is not a weakly prime, because it can be changed into another prime (9027720047) 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, 4513860024 + 4513860025.

It is an arithmetic number, because the mean of its divisors is an integer number (4513860025).

Almost surely, 2^9027720049 is an apocalyptic number.

It is an amenable number.

9027720049 is a deficient number, since it is larger than the sum of its proper divisors (1).

9027720049 is an equidigital number, since it uses as much as digits as its factorization.

9027720049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 9027720049 is about 95014.3149688509. The cubic root of 9027720049 is about 2082.2171907873.

The spelling of 9027720049 in words is "nine billion, twenty-seven million, seven hundred twenty thousand, forty-nine".