9987893 has 2 divisors, whose sum is σ = 9987894. Its totient is φ = 9987892.

The previous prime is 9987889. The next prime is 9987931. The reversal of 9987893 is 3987899.

9987893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9778129 + 209764 = 3127^2 + 458^2 .

It is a cyclic number.

It is not a de Polignac number, because 9987893 - 2² = 9987889 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9987853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4993946 + 4993947.

It is an arithmetic number, because the mean of its divisors is an integer number (4993947).

Almost surely, 2^9987893 is an apocalyptic number.

It is an amenable number.

9987893 is a deficient number, since it is larger than the sum of its proper divisors (1).

9987893 is an equidigital number, since it uses as much as digits as its factorization.

9987893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 53.

The square root of 9987893 is about 3160.3627956296. The cubic root of 9987893 is about 215.3564880885.

The spelling of 9987893 in words is "nine million, nine hundred eighty-seven thousand, eight hundred ninety-three".