9890766097 has 2 divisors, whose sum is σ = 9890766098. Its totient is φ = 9890766096.

The previous prime is 9890766089. The next prime is 9890766121. The reversal of 9890766097 is 7906670989.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8342264896 + 1548501201 = 91336^2 + 39351^2 .

It is a cyclic number.

It is not a de Polignac number, because 9890766097 - 2³ = 9890766089 is a prime.

It is a super-2 number, since 2×9890766097² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9890766397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4945383048 + 4945383049.

It is an arithmetic number, because the mean of its divisors is an integer number (4945383049).

Almost surely, 2^9890766097 is an apocalyptic number.

It is an amenable number.

9890766097 is a deficient number, since it is larger than the sum of its proper divisors (1).

9890766097 is an equidigital number, since it uses as much as digits as its factorization.

9890766097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10287648, while the sum is 61.

The square root of 9890766097 is about 99452.3307771115. The cubic root of 9890766097 is about 2146.5613752989.

The spelling of 9890766097 in words is "nine billion, eight hundred ninety million, seven hundred sixty-six thousand, ninety-seven".