9975398371 has 2 divisors, whose sum is σ = 9975398372. Its totient is φ = 9975398370.

The previous prime is 9975398353. The next prime is 9975398383. The reversal of 9975398371 is 1738935799.

It is a strong prime.

It is an emirp because it is prime and its reverse (1738935799) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9975398371 is a prime.

It is not a weakly prime, because it can be changed into another prime (9975398341) 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, 4987699185 + 4987699186.

It is an arithmetic number, because the mean of its divisors is an integer number (4987699186).

Almost surely, 2^9975398371 is an apocalyptic number.

9975398371 is a deficient number, since it is larger than the sum of its proper divisors (1).

9975398371 is an equidigital number, since it uses as much as digits as its factorization.

9975398371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12859560, while the sum is 61.

The square root of 9975398371 is about 99876.9161067761. The cubic root of 9975398371 is about 2152.6664857830. Note that the first 3 decimals are identical.

The spelling of 9975398371 in words is "nine billion, nine hundred seventy-five million, three hundred ninety-eight thousand, three hundred seventy-one".