9378579449 has 2 divisors, whose sum is σ = 9378579450. Its totient is φ = 9378579448.

The previous prime is 9378579391. The next prime is 9378579467. The reversal of 9378579449 is 9449758739.

9378579449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8608128400 + 770451049 = 92780^2 + 27757^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9378579449 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (9378572449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4689289724 + 4689289725.

It is an arithmetic number, because the mean of its divisors is an integer number (4689289725).

Almost surely, 2^9378579449 is an apocalyptic number.

It is an amenable number.

9378579449 is a deficient number, since it is larger than the sum of its proper divisors (1).

9378579449 is an equidigital number, since it uses as much as digits as its factorization.

9378579449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68584320, while the sum is 65.

The square root of 9378579449 is about 96843.0660863234. The cubic root of 9378579449 is about 2108.8499868155.

The spelling of 9378579449 in words is "nine billion, three hundred seventy-eight million, five hundred seventy-nine thousand, four hundred forty-nine".