9977744999 has 2 divisors, whose sum is σ = 9977745000. Its totient is φ = 9977744998.

The previous prime is 9977744981. The next prime is 9977745013. The reversal of 9977744999 is 9994477799.

9977744999 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 is a cyclic number.

It is not a de Polignac number, because 9977744999 - 2²⁰ = 9976696423 is a prime.

It is a Sophie Germain prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9977744969) 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, 4988872499 + 4988872500.

It is an arithmetic number, because the mean of its divisors is an integer number (4988872500).

Almost surely, 2^9977744999 is an apocalyptic number.

9977744999 is a deficient number, since it is larger than the sum of its proper divisors (1).

9977744999 is an equidigital number, since it uses as much as digits as its factorization.

9977744999 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 9977744999 is about 99888.6630153793. The cubic root of 9977744999 is about 2152.8352714030.

The spelling of 9977744999 in words is "nine billion, nine hundred seventy-seven million, seven hundred forty-four thousand, nine hundred ninety-nine".