9689890989869 has 2 divisors, whose sum is σ = 9689890989870. Its totient is φ = 9689890989868.

The previous prime is 9689890989841. The next prime is 9689890989929.

9689890989869 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9625897168969 + 63993820900 = 3102563^2 + 252970^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 9689890989869 - 2²⁰ = 9689889941293 is a prime.

It is a super-2 number, since 2×9689890989869² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9689890989169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4844945494934 + 4844945494935.

It is an arithmetic number, because the mean of its divisors is an integer number (4844945494935).

Almost surely, 2^{9689890989869} is an apocalyptic number.

It is an amenable number.

9689890989869 is a deficient number, since it is larger than the sum of its proper divisors (1).

9689890989869 is an equidigital number, since it uses as much as digits as its factorization.

9689890989869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78364164096, while the sum is 98.

The spelling of 9689890989869 in words is "nine trillion, six hundred eighty-nine billion, eight hundred ninety million, nine hundred eighty-nine thousand, eight hundred sixty-nine".