9738897869 has 2 divisors, whose sum is σ = 9738897870. Its totient is φ = 9738897868.

The previous prime is 9738897863. The next prime is 9738897941. The reversal of 9738897869 is 9687988379.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8079313225 + 1659584644 = 89885^2 + 40738^2 .

It is an emirp because it is prime and its reverse (9687988379) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9738897869 - 2⁴ = 9738897853 is a prime.

It is a super-2 number, since 2×9738897869² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9738897796 and 9738897805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9738897863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4869448934 + 4869448935.

It is an arithmetic number, because the mean of its divisors is an integer number (4869448935).

Almost surely, 2^9738897869 is an apocalyptic number.

It is an amenable number.

9738897869 is a deficient number, since it is larger than the sum of its proper divisors (1).

9738897869 is an equidigital number, since it uses as much as digits as its factorization.

9738897869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 329204736, while the sum is 74.

The square root of 9738897869 is about 98685.8544523986. The cubic root of 9738897869 is about 2135.5181676444.

The spelling of 9738897869 in words is "nine billion, seven hundred thirty-eight million, eight hundred ninety-seven thousand, eight hundred sixty-nine".