9987741 has 6 divisors (see below), whose sum is σ = 14426750. Its totient is φ = 6658488.

The previous prime is 9987737. The next prime is 9987793. The reversal of 9987741 is 1477899.

9987741 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9272025 + 715716 = 3045^2 + 846^2 .

It is not a de Polignac number, because 9987741 - 2² = 9987737 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9987841) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 554866 + ... + 554883.

Almost surely, 2^9987741 is an apocalyptic number.

It is an amenable number.

9987741 is a deficient number, since it is larger than the sum of its proper divisors (4439009).

9987741 is a wasteful number, since it uses less digits than its factorization.

9987741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109755 (or 1109752 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 9987741 is about 3160.3387476661. The cubic root of 9987741 is about 215.3553956208.

The spelling of 9987741 in words is "nine million, nine hundred eighty-seven thousand, seven hundred forty-one".