9987774 has 32 divisors (see below), whose sum is σ = 21025440. Its totient is φ = 3158400.

The previous prime is 9987737. The next prime is 9987793. The reversal of 9987774 is 4777899.

It is a nialpdrome in base 10.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 10144 + ... + 11084.

It is an arithmetic number, because the mean of its divisors is an integer number (657045).

Almost surely, 2^9987774 is an apocalyptic number.

9987774 is an abundant number, since it is smaller than the sum of its proper divisors (11037666).

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

9987774 is a wasteful number, since it uses less digits than its factorization.

9987774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036.

The product of its digits is 889056, while the sum is 51.

The square root of 9987774 is about 3160.3439686211. The cubic root of 9987774 is about 215.3556328022.

The spelling of 9987774 in words is "nine million, nine hundred eighty-seven thousand, seven hundred seventy-four".