330000921 has 24 divisors (see below), whose sum is σ = 495855360. Its totient is φ = 211255200.

The previous prime is 330000907. The next prime is 330000961. The reversal of 330000921 is 129000033.

It is not a de Polignac number, because 330000921 - 2¹⁰ = 329999897 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 330000894 and 330000903.

It is not an unprimeable number, because it can be changed into a prime (330000901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32035 + ... + 41063.

It is an arithmetic number, because the mean of its divisors is an integer number (20660640).

Almost surely, 2^330000921 is an apocalyptic number.

330000921 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

330000921 is a deficient number, since it is larger than the sum of its proper divisors (165854439).

330000921 is a wasteful number, since it uses less digits than its factorization.

330000921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9197 (or 9194 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 330000921 is about 18165.9274742580. The cubic root of 330000921 is about 691.0429658793.

Adding to 330000921 its reverse (129000033), we get a palindrome (459000954).

The spelling of 330000921 in words is "three hundred thirty million, nine hundred twenty-one", and thus it is an aban number.