9216955997 has 2 divisors, whose sum is σ = 9216955998. Its totient is φ = 9216955996.

The previous prime is 9216955981. The next prime is 9216955999. The reversal of 9216955997 is 7995596129.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6126819076 + 3090136921 = 78274^2 + 55589^2 .

It is a cyclic number.

It is not a de Polignac number, because 9216955997 - 2⁴ = 9216955981 is a prime.

Together with 9216955999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9216955999) 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, 4608477998 + 4608477999.

It is an arithmetic number, because the mean of its divisors is an integer number (4608477999).

Almost surely, 2^9216955997 is an apocalyptic number.

It is an amenable number.

9216955997 is a deficient number, since it is larger than the sum of its proper divisors (1).

9216955997 is an equidigital number, since it uses as much as digits as its factorization.

9216955997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13778100, while the sum is 62.

The square root of 9216955997 is about 96004.9790219236. The cubic root of 9216955997 is about 2096.6656076786.

The spelling of 9216955997 in words is "nine billion, two hundred sixteen million, nine hundred fifty-five thousand, nine hundred ninety-seven".