9984431 has 2 divisors, whose sum is σ = 9984432. Its totient is φ = 9984430.

The previous prime is 9984421. The next prime is 9984437. The reversal of 9984431 is 1344899.

It is a strong prime.

It is an emirp because it is prime and its reverse (1344899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9984431 - 2¹⁸ = 9722287 is a prime.

It is a super-2 number, since 2×9984431² = 199377724787522, which contains 22 as substring.

It is a Chen prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9984437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4992215 + 4992216.

It is an arithmetic number, because the mean of its divisors is an integer number (4992216).

Almost surely, 2^9984431 is an apocalyptic number.

9984431 is a deficient number, since it is larger than the sum of its proper divisors (1).

9984431 is an equidigital number, since it uses as much as digits as its factorization.

9984431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 38.

The square root of 9984431 is about 3159.8150262318. The cubic root of 9984431 is about 215.3316029494.

The spelling of 9984431 in words is "nine million, nine hundred eighty-four thousand, four hundred thirty-one".