397853441281 has 2 divisors, whose sum is σ = 397853441282. Its totient is φ = 397853441280.

The previous prime is 397853441203. The next prime is 397853441299. The reversal of 397853441281 is 182144358793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 343583545600 + 54269895681 = 586160^2 + 232959^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397853441281 is a prime.

It is a super-2 number, since 2×397853441281² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (397853441581) 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, 198926720640 + 198926720641.

It is an arithmetic number, because the mean of its divisors is an integer number (198926720641).

Almost surely, 2^397853441281 is an apocalyptic number.

It is an amenable number.

397853441281 is a deficient number, since it is larger than the sum of its proper divisors (1).

397853441281 is an equidigital number, since it uses as much as digits as its factorization.

397853441281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5806080, while the sum is 55.

The spelling of 397853441281 in words is "three hundred ninety-seven billion, eight hundred fifty-three million, four hundred forty-one thousand, two hundred eighty-one".