9969779023 has 2 divisors, whose sum is σ = 9969779024. Its totient is φ = 9969779022.

The previous prime is 9969779011. The next prime is 9969779089. The reversal of 9969779023 is 3209779699.

9969779023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9969779023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9969770023) 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, 4984889511 + 4984889512.

It is an arithmetic number, because the mean of its divisors is an integer number (4984889512).

Almost surely, 2^9969779023 is an apocalyptic number.

9969779023 is a deficient number, since it is larger than the sum of its proper divisors (1).

9969779023 is an equidigital number, since it uses as much as digits as its factorization.

9969779023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11573604, while the sum is 61.

The square root of 9969779023 is about 99848.7807787356. The cubic root of 9969779023 is about 2152.2621960230.

The spelling of 9969779023 in words is "nine billion, nine hundred sixty-nine million, seven hundred seventy-nine thousand, twenty-three".