9987834 has 16 divisors (see below), whose sum is σ = 20007072. Its totient is φ = 3324048.

The previous prime is 9987827. The next prime is 9987841. The reversal of 9987834 is 4387899.

It is an interprime number because it is at equal distance from previous prime (9987827) and next prime (9987841).

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 5797 + ... + 7319.

It is an arithmetic number, because the mean of its divisors is an integer number (1250442).

Almost surely, 2^9987834 is an apocalyptic number.

9987834 is an abundant number, since it is smaller than the sum of its proper divisors (10019238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9987834 is a wasteful number, since it uses less digits than its factorization.

9987834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2621.

The product of its digits is 435456, while the sum is 48.

The square root of 9987834 is about 3160.3534612445. The cubic root of 9987834 is about 215.3560640398.

The spelling of 9987834 in words is "nine million, nine hundred eighty-seven thousand, eight hundred thirty-four".