9987404 has 12 divisors (see below), whose sum is σ = 19974864. Its totient is φ = 4280304.

The previous prime is 9987403. The next prime is 9987413. The reversal of 9987404 is 4047899.

9987404 is an admirable number.

It is a super-3 number, since 3×9987404³ (a number of 22 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 178319 + ... + 178374.

It is an arithmetic number, because the mean of its divisors is an integer number (1664572).

Almost surely, 2^9987404 is an apocalyptic number.

It is an amenable number.

9987404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

9987404 is a wasteful number, since it uses less digits than its factorization.

9987404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356704 (or 356702 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 9987404 is about 3160.2854301471. The cubic root of 9987404 is about 215.3529734653.

The spelling of 9987404 in words is "nine million, nine hundred eighty-seven thousand, four hundred four".