993992228 has 24 divisors (see below), whose sum is σ = 1765693440. Its totient is φ = 489551040.

The previous prime is 993992203. The next prime is 993992231. The reversal of 993992228 is 822299399.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 993992228.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91325 + ... + 101627.

It is an arithmetic number, because the mean of its divisors is an integer number (73570560).

Almost surely, 2^993992228 is an apocalyptic number.

It is an amenable number.

993992228 is a deficient number, since it is larger than the sum of its proper divisors (771701212).

993992228 is a wasteful number, since it uses less digits than its factorization.

993992228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10667 (or 10665 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 53.

The square root of 993992228 is about 31527.6422841925. The cubic root of 993992228 is about 997.9933855249.

The spelling of 993992228 in words is "nine hundred ninety-three million, nine hundred ninety-two thousand, two hundred twenty-eight".