397866853627 has 2 divisors, whose sum is σ = 397866853628. Its totient is φ = 397866853626.

The previous prime is 397866853609. The next prime is 397866853649. The reversal of 397866853627 is 726358668793.

It is a weak prime.

It is an emirp because it is prime and its reverse (726358668793) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 397866853627 - 2³¹ = 395719369979 is a prime.

It is not a weakly prime, because it can be changed into another prime (397866853667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198933426813 + 198933426814.

It is an arithmetic number, because the mean of its divisors is an integer number (198933426814).

Almost surely, 2^397866853627 is an apocalyptic number.

397866853627 is a deficient number, since it is larger than the sum of its proper divisors (1).

397866853627 is an equidigital number, since it uses as much as digits as its factorization.

397866853627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 548674560, while the sum is 70.

The spelling of 397866853627 in words is "three hundred ninety-seven billion, eight hundred sixty-six million, eight hundred fifty-three thousand, six hundred twenty-seven".