9938367287 has 2 divisors, whose sum is σ = 9938367288. Its totient is φ = 9938367286.

The previous prime is 9938367247. The next prime is 9938367293. The reversal of 9938367287 is 7827638399.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9938367287 - 2¹⁸ = 9938105143 is a prime.

It is a super-2 number, since 2×9938367287² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9938367247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4969183643 + 4969183644.

It is an arithmetic number, because the mean of its divisors is an integer number (4969183644).

Almost surely, 2^9938367287 is an apocalyptic number.

9938367287 is a deficient number, since it is larger than the sum of its proper divisors (1).

9938367287 is an equidigital number, since it uses as much as digits as its factorization.

9938367287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27433728, while the sum is 62.

The square root of 9938367287 is about 99691.3601421909. The cubic root of 9938367287 is about 2149.9994438073. Note that the first 3 decimals are identical.

The spelling of 9938367287 in words is "nine billion, nine hundred thirty-eight million, three hundred sixty-seven thousand, two hundred eighty-seven".