9065204921 has 2 divisors, whose sum is σ = 9065204922. Its totient is φ = 9065204920.

The previous prime is 9065204909. The next prime is 9065205047. The reversal of 9065204921 is 1294025609.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7646628025 + 1418576896 = 87445^2 + 37664^2 .

It is a cyclic number.

It is not a de Polignac number, because 9065204921 - 2¹⁰ = 9065203897 is a prime.

It is not a weakly prime, because it can be changed into another prime (9065203921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4532602460 + 4532602461.

It is an arithmetic number, because the mean of its divisors is an integer number (4532602461).

Almost surely, 2^9065204921 is an apocalyptic number.

It is an amenable number.

9065204921 is a deficient number, since it is larger than the sum of its proper divisors (1).

9065204921 is an equidigital number, since it uses as much as digits as its factorization.

9065204921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 9065204921 is about 95211.3697044633. The cubic root of 9065204921 is about 2085.0951365055.

The spelling of 9065204921 in words is "nine billion, sixty-five million, two hundred four thousand, nine hundred twenty-one".