9864487 has 2 divisors, whose sum is σ = 9864488. Its totient is φ = 9864486.

The previous prime is 9864473. The next prime is 9864497. The reversal of 9864487 is 7844689.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9864487 - 2⁷ = 9864359 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9864427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4932243 + 4932244.

It is an arithmetic number, because the mean of its divisors is an integer number (4932244).

Almost surely, 2^9864487 is an apocalyptic number.

9864487 is a deficient number, since it is larger than the sum of its proper divisors (1).

9864487 is an equidigital number, since it uses as much as digits as its factorization.

9864487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 46.

The square root of 9864487 is about 3140.7780883087. The cubic root of 9864487 is about 214.4658599625.

The spelling of 9864487 in words is "nine million, eight hundred sixty-four thousand, four hundred eighty-seven".