9900769 has 2 divisors, whose sum is σ = 9900770. Its totient is φ = 9900768.

The previous prime is 9900757. The next prime is 9900773. The reversal of 9900769 is 9670099.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9684544 + 216225 = 3112^2 + 465^2 .

It is an emirp because it is prime and its reverse (9670099) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9900769 - 2⁷ = 9900641 is a prime.

It is a super-2 number, since 2×9900769² = 196050453582722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9900799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4950384 + 4950385.

It is an arithmetic number, because the mean of its divisors is an integer number (4950385).

Almost surely, 2^9900769 is an apocalyptic number.

It is an amenable number.

9900769 is a deficient number, since it is larger than the sum of its proper divisors (1).

9900769 is an equidigital number, since it uses as much as digits as its factorization.

9900769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 9900769 is about 3146.5487442593. The cubic root of 9900769 is about 214.7284764187.

The spelling of 9900769 in words is "nine million, nine hundred thousand, seven hundred sixty-nine".