9900396773 has 2 divisors, whose sum is σ = 9900396774. Its totient is φ = 9900396772.

The previous prime is 9900396763. The next prime is 9900396817. The reversal of 9900396773 is 3776930099.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9881751649 + 18645124 = 99407^2 + 4318^2 .

It is an emirp because it is prime and its reverse (3776930099) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9900396773 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9900396763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4950198386 + 4950198387.

It is an arithmetic number, because the mean of its divisors is an integer number (4950198387).

Almost surely, 2^9900396773 is an apocalyptic number.

It is an amenable number.

9900396773 is a deficient number, since it is larger than the sum of its proper divisors (1).

9900396773 is an equidigital number, since it uses as much as digits as its factorization.

9900396773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1928934, while the sum is 53.

The square root of 9900396773 is about 99500.7375500303. The cubic root of 9900396773 is about 2147.2578542438.

The spelling of 9900396773 in words is "nine billion, nine hundred million, three hundred ninety-six thousand, seven hundred seventy-three".