8077979149 has 2 divisors, whose sum is σ = 8077979150. Its totient is φ = 8077979148.

The previous prime is 8077979123. The next prime is 8077979197. The reversal of 8077979149 is 9419797708.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4917515625 + 3160463524 = 70125^2 + 56218^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8077979149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8077971149) 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, 4038989574 + 4038989575.

It is an arithmetic number, because the mean of its divisors is an integer number (4038989575).

Almost surely, 2^8077979149 is an apocalyptic number.

It is an amenable number.

8077979149 is a deficient number, since it is larger than the sum of its proper divisors (1).

8077979149 is an equidigital number, since it uses as much as digits as its factorization.

8077979149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8001504, while the sum is 61.

The square root of 8077979149 is about 89877.5786778883. The cubic root of 8077979149 is about 2006.4772623071.

The spelling of 8077979149 in words is "eight billion, seventy-seven million, nine hundred seventy-nine thousand, one hundred forty-nine".