9086531021 has 2 divisors, whose sum is σ = 9086531022. Its totient is φ = 9086531020.

The previous prime is 9086530961. The next prime is 9086531071. The reversal of 9086531021 is 1201356809.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6725640100 + 2360890921 = 82010^2 + 48589^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9086531021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9086531071) by changing a digit.

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 as a sum of consecutive naturals, namely, 4543265510 + 4543265511.

It is an arithmetic number, because the mean of its divisors is an integer number (4543265511).

Almost surely, 2^9086531021 is an apocalyptic number.

It is an amenable number.

9086531021 is a deficient number, since it is larger than the sum of its proper divisors (1).

9086531021 is an equidigital number, since it uses as much as digits as its factorization.

9086531021 is an odious number, because the sum of its binary digits is odd.

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

The square root of 9086531021 is about 95323.2973674327. The cubic root of 9086531021 is about 2086.7289338455.

The spelling of 9086531021 in words is "nine billion, eighty-six million, five hundred thirty-one thousand, twenty-one".