9364667021 has 2 divisors, whose sum is σ = 9364667022. Its totient is φ = 9364667020.

The previous prime is 9364666999. The next prime is 9364667029. The reversal of 9364667021 is 1207664639.

9364667021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8609241796 + 755425225 = 92786^2 + 27485^2 .

It is a cyclic number.

It is not a de Polignac number, because 9364667021 - 2²² = 9360472717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9364667029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4682333510 + 4682333511.

It is an arithmetic number, because the mean of its divisors is an integer number (4682333511).

Almost surely, 2^9364667021 is an apocalyptic number.

It is an amenable number.

9364667021 is a deficient number, since it is larger than the sum of its proper divisors (1).

9364667021 is an equidigital number, since it uses as much as digits as its factorization.

9364667021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 9364667021 is about 96771.2096700253. The cubic root of 9364667021 is about 2107.8066965086.

The spelling of 9364667021 in words is "nine billion, three hundred sixty-four million, six hundred sixty-seven thousand, twenty-one".