9064040021 has 2 divisors, whose sum is σ = 9064040022. Its totient is φ = 9064040020.

The previous prime is 9064039981. The next prime is 9064040113. The reversal of 9064040021 is 1200404609.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7764076996 + 1299963025 = 88114^2 + 36055^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9064040021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9064030021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4532020010 + 4532020011.

It is an arithmetic number, because the mean of its divisors is an integer number (4532020011).

Almost surely, 2^9064040021 is an apocalyptic number.

It is an amenable number.

9064040021 is a deficient number, since it is larger than the sum of its proper divisors (1).

9064040021 is an equidigital number, since it uses as much as digits as its factorization.

9064040021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 9064040021 is about 95205.2520662595. The cubic root of 9064040021 is about 2085.0058194816.

The spelling of 9064040021 in words is "nine billion, sixty-four million, forty thousand, twenty-one".