9984187427 has 2 divisors, whose sum is σ = 9984187428. Its totient is φ = 9984187426.

The previous prime is 9984187387. The next prime is 9984187429. The reversal of 9984187427 is 7247814899.

9984187427 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9984187427 - 2²⁸ = 9715751971 is a prime.

Together with 9984187429, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9984187429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4992093713 + 4992093714.

It is an arithmetic number, because the mean of its divisors is an integer number (4992093714).

Almost surely, 2^9984187427 is an apocalyptic number.

9984187427 is a deficient number, since it is larger than the sum of its proper divisors (1).

9984187427 is an equidigital number, since it uses as much as digits as its factorization.

9984187427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8128512, while the sum is 59.

The square root of 9984187427 is about 99920.9058555816. The cubic root of 9984187427 is about 2153.2985191014.

The spelling of 9984187427 in words is "nine billion, nine hundred eighty-four million, one hundred eighty-seven thousand, four hundred twenty-seven".