9917471027 has 2 divisors, whose sum is σ = 9917471028. Its totient is φ = 9917471026.

The previous prime is 9917470957. The next prime is 9917471029. The reversal of 9917471027 is 7201747199.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9917471027 - 2²⁶ = 9850362163 is a prime.

Together with 9917471029, 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 (9917471029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4958735513 + 4958735514.

It is an arithmetic number, because the mean of its divisors is an integer number (4958735514).

Almost surely, 2^9917471027 is an apocalyptic number.

9917471027 is a deficient number, since it is larger than the sum of its proper divisors (1).

9917471027 is an equidigital number, since it uses as much as digits as its factorization.

9917471027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 222264, while the sum is 47.

The square root of 9917471027 is about 99586.5002246790. The cubic root of 9917471027 is about 2148.4915344266.

The spelling of 9917471027 in words is "nine billion, nine hundred seventeen million, four hundred seventy-one thousand, twenty-seven".