9774949979 has 2 divisors, whose sum is σ = 9774949980. Its totient is φ = 9774949978.

The previous prime is 9774949927. The next prime is 9774949997. The reversal of 9774949979 is 9799494779.

9774949979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (9774949997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (9799494779) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9774949979 - 2¹² = 9774945883 is a prime.

It is not a weakly prime, because it can be changed into another prime (9774949279) 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, 4887474989 + 4887474990.

It is an arithmetic number, because the mean of its divisors is an integer number (4887474990).

Almost surely, 2^9774949979 is an apocalyptic number.

9774949979 is a deficient number, since it is larger than the sum of its proper divisors (1).

9774949979 is an equidigital number, since it uses as much as digits as its factorization.

9774949979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324060912, while the sum is 74.

The square root of 9774949979 is about 98868.3466990320. The cubic root of 9774949979 is about 2138.1500578110.

The spelling of 9774949979 in words is "nine billion, seven hundred seventy-four million, nine hundred forty-nine thousand, nine hundred seventy-nine".