9897922667 has 2 divisors, whose sum is σ = 9897922668. Its totient is φ = 9897922666.

The previous prime is 9897922549. The next prime is 9897922669. The reversal of 9897922667 is 7662297989.

9897922667 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 is a cyclic number.

It is not a de Polignac number, because 9897922667 - 2¹² = 9897918571 is a prime.

Together with 9897922669, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9897922669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4948961333 + 4948961334.

It is an arithmetic number, because the mean of its divisors is an integer number (4948961334).

Almost surely, 2^9897922667 is an apocalyptic number.

9897922667 is a deficient number, since it is larger than the sum of its proper divisors (1).

9897922667 is an equidigital number, since it uses as much as digits as its factorization.

9897922667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41150592, while the sum is 65.

The square root of 9897922667 is about 99488.3041718975. The cubic root of 9897922667 is about 2147.0789729909.

The spelling of 9897922667 in words is "nine billion, eight hundred ninety-seven million, nine hundred twenty-two thousand, six hundred sixty-seven".