9021144905 has 8 divisors (see below), whose sum is σ = 10826680200. Its totient is φ = 7216045056.

The previous prime is 9021144859. The next prime is 9021144943. The reversal of 9021144905 is 5094411209.

It can be written as a sum of positive squares in 4 ways, for example, as 1524355849 + 7496789056 = 39043^2 + 86584^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9021144905 - 2²⁰ = 9020096329 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61400 + ... + 147689.

It is an arithmetic number, because the mean of its divisors is an integer number (1353335025).

Almost surely, 2^9021144905 is an apocalyptic number.

It is an amenable number.

9021144905 is a deficient number, since it is larger than the sum of its proper divisors (1805535295).

9021144905 is a wasteful number, since it uses less digits than its factorization.

9021144905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217723.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 9021144905 is about 94979.7078591001. The cubic root of 9021144905 is about 2081.7115554420.

The spelling of 9021144905 in words is "nine billion, twenty-one million, one hundred forty-four thousand, nine hundred five".