9984375 has 42 divisors (see below), whose sum is σ = 18281016.
Its totient is φ = 5250000.
The previous prime is 9984353. The next prime is 9984383. The reversal of 9984375 is 5734899.
It is not a de Polignac number, because 9984375 - 26 = 9984311 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (45).
9984375 is a lucky number.
It is a self number, because there is not a number n which added to its sum of digits gives 9984375.
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 41 ways as a sum of consecutive naturals, for example, 140590 + ... + 140660.
Almost surely, 29984375 is an apocalyptic number.
9984375 is a deficient number, since it is larger than the sum of its proper divisors (8296641).
9984375 is an frugal number, since it uses more digits than its factorization.
9984375 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 107 (or 79 counting only the distinct ones).
The product of its digits is 272160, while the sum is 45.
The square root of 9984375 is about 3159.8061649411.
The cubic root of 9984375 is about 215.3312003695.
The spelling of 9984375 in words is "nine million, nine hundred eighty-four thousand, three hundred seventy-five".