9909674773 has 2 divisors, whose sum is σ = 9909674774. Its totient is φ = 9909674772.

The previous prime is 9909674771. The next prime is 9909674777. The reversal of 9909674773 is 3774769099.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9725312689 + 184362084 = 98617^2 + 13578^2 .

It is a cyclic number.

It is not a de Polignac number, because 9909674773 - 2¹ = 9909674771 is a prime.

Together with 9909674771, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9909674771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4954837386 + 4954837387.

It is an arithmetic number, because the mean of its divisors is an integer number (4954837387).

Almost surely, 2^9909674773 is an apocalyptic number.

It is an amenable number.

9909674773 is a deficient number, since it is larger than the sum of its proper divisors (1).

9909674773 is an equidigital number, since it uses as much as digits as its factorization.

9909674773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18003384, while the sum is 61.

The square root of 9909674773 is about 99547.3494021815. The cubic root of 9909674773 is about 2147.9284010508.

The spelling of 9909674773 in words is "nine billion, nine hundred nine million, six hundred seventy-four thousand, seven hundred seventy-three".