9988454 has 24 divisors (see below), whose sum is σ = 17544600. Its totient is φ = 4252416.

The previous prime is 9988453. The next prime is 9988481. The reversal of 9988454 is 4548899.

It is a junction number, because it is equal to n+sod(n) for n = 9988399 and 9988408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9988453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22022 + ... + 22470.

It is an arithmetic number, because the mean of its divisors is an integer number (731025).

Almost surely, 2^9988454 is an apocalyptic number.

9988454 is a deficient number, since it is larger than the sum of its proper divisors (7556146).

9988454 is a wasteful number, since it uses less digits than its factorization.

9988454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692 (or 685 counting only the distinct ones).

The product of its digits is 414720, while the sum is 47.

The square root of 9988454 is about 3160.4515500162. The cubic root of 9988454 is about 215.3605200609.

The spelling of 9988454 in words is "nine million, nine hundred eighty-eight thousand, four hundred fifty-four".