9858997669 has 2 divisors, whose sum is σ = 9858997670. Its totient is φ = 9858997668.

The previous prime is 9858997649. The next prime is 9858997703. The reversal of 9858997669 is 9667998589.

9858997669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9854532900 + 4464769 = 99270^2 + 2113^2 .

It is a cyclic number.

It is not a de Polignac number, because 9858997669 - 2¹⁹ = 9858473381 is a prime.

It is a super-2 number, since 2×9858997669² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9858997595 and 9858997604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9858997639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4929498834 + 4929498835.

It is an arithmetic number, because the mean of its divisors is an integer number (4929498835).

Almost surely, 2^9858997669 is an apocalyptic number.

It is an amenable number.

9858997669 is a deficient number, since it is larger than the sum of its proper divisors (1).

9858997669 is an equidigital number, since it uses as much as digits as its factorization.

9858997669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 529079040, while the sum is 76.

The square root of 9858997669 is about 99292.4854608847. The cubic root of 9858997669 is about 2144.2607101938.

The spelling of 9858997669 in words is "nine billion, eight hundred fifty-eight million, nine hundred ninety-seven thousand, six hundred sixty-nine".