9987408 has 80 divisors (see below), whose sum is σ = 29214400. Its totient is φ = 3265920.

The previous prime is 9987403. The next prime is 9987413. The reversal of 9987408 is 8047899.

It is an interprime number because it is at equal distance from previous prime (9987403) and next prime (9987413).

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9987403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26163 + ... + 26541.

It is an arithmetic number, because the mean of its divisors is an integer number (365180).

Almost surely, 2^9987408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9987408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14607200).

9987408 is an abundant number, since it is smaller than the sum of its proper divisors (19226992).

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

9987408 is a wasteful number, since it uses less digits than its factorization.

9987408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 445 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 9987408 is about 3160.2860630013. The cubic root of 9987408 is about 215.3530022152.

The spelling of 9987408 in words is "nine million, nine hundred eighty-seven thousand, four hundred eight".