9993285 has 12 divisors (see below), whose sum is σ = 17321772. Its totient is φ = 5329728.

The previous prime is 9993271. The next prime is 9993289. The reversal of 9993285 is 5823999.

It can be written as a sum of positive squares in 2 ways, for example, as 1887876 + 8105409 = 1374^2 + 2847^2 .

It is not a de Polignac number, because 9993285 - 2¹³ = 9985093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 222073 = 9993285 / (9 + 9 + 9 + 3 + 2 + 8 + 5).

It is an Ulam number.

9993285 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 9993285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9993289) 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, 110992 + ... + 111081.

It is an arithmetic number, because the mean of its divisors is an integer number (1443481).

Almost surely, 2^9993285 is an apocalyptic number.

It is an amenable number.

9993285 is a deficient number, since it is larger than the sum of its proper divisors (7328487).

9993285 is a wasteful number, since it uses less digits than its factorization.

9993285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222084 (or 222081 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 9993285 is about 3161.2157471454. The cubic root of 9993285 is about 215.3952347753.

The spelling of 9993285 in words is "nine million, nine hundred ninety-three thousand, two hundred eighty-five".