9938869 has 2 divisors, whose sum is σ = 9938870. Its totient is φ = 9938868.

The previous prime is 9938867. The next prime is 9938899. The reversal of 9938869 is 9688399.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9394225 + 544644 = 3065^2 + 738^2 .

It is a cyclic number.

It is not a de Polignac number, because 9938869 - 2¹ = 9938867 is a prime.

It is a super-2 number, since 2×9938869² = 197562233998322, which contains 22 as substring.

Together with 9938867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9938861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4969434 + 4969435.

It is an arithmetic number, because the mean of its divisors is an integer number (4969435).

Almost surely, 2^9938869 is an apocalyptic number.

It is an amenable number.

9938869 is a deficient number, since it is larger than the sum of its proper divisors (1).

9938869 is an equidigital number, since it uses as much as digits as its factorization.

9938869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 52.

The square root of 9938869 is about 3152.5971832760. The cubic root of 9938869 is about 215.0035622269.

The spelling of 9938869 in words is "nine million, nine hundred thirty-eight thousand, eight hundred sixty-nine".