9987544927 has 2 divisors, whose sum is σ = 9987544928. Its totient is φ = 9987544926.

The previous prime is 9987544913. The next prime is 9987544943. The reversal of 9987544927 is 7294457899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9987544927 - 2¹¹ = 9987542879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9987544327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4993772463 + 4993772464.

It is an arithmetic number, because the mean of its divisors is an integer number (4993772464).

Almost surely, 2^9987544927 is an apocalyptic number.

9987544927 is a deficient number, since it is larger than the sum of its proper divisors (1).

9987544927 is an equidigital number, since it uses as much as digits as its factorization.

9987544927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45722880, while the sum is 64.

The square root of 9987544927 is about 99937.7052318093. The cubic root of 9987544927 is about 2153.5398637135.

The spelling of 9987544927 in words is "nine billion, nine hundred eighty-seven million, five hundred forty-four thousand, nine hundred twenty-seven".