985275307397 has 2 divisors, whose sum is σ = 985275307398. Its totient is φ = 985275307396.

The previous prime is 985275307351. The next prime is 985275307399. The reversal of 985275307397 is 793703572589.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 872563360321 + 112711947076 = 934111^2 + 335726^2 .

It is an emirp because it is prime and its reverse (793703572589) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 985275307397 - 2¹⁸ = 985275045253 is a prime.

Together with 985275307399, 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 (985275307399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492637653698 + 492637653699.

It is an arithmetic number, because the mean of its divisors is an integer number (492637653699).

Almost surely, 2^985275307397 is an apocalyptic number.

It is an amenable number.

985275307397 is a deficient number, since it is larger than the sum of its proper divisors (1).

985275307397 is an equidigital number, since it uses as much as digits as its factorization.

985275307397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100018800, while the sum is 65.

The spelling of 985275307397 in words is "nine hundred eighty-five billion, two hundred seventy-five million, three hundred seven thousand, three hundred ninety-seven".