397063081 has 2 divisors, whose sum is σ = 397063082. Its totient is φ = 397063080.

The previous prime is 397063063. The next prime is 397063103. The reversal of 397063081 is 180360793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 396647056 + 416025 = 19916^2 + 645^2 .

It is a cyclic number.

It is not a de Polignac number, because 397063081 - 2¹¹ = 397061033 is a prime.

It is a super-2 number, since 2×397063081² = 315318180586425122, which contains 22 as substring.

It is equal to p_21187837 and since 397063081 and 21187837 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 397063081.

It is not a weakly prime, because it can be changed into another prime (397063031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198531540 + 198531541.

It is an arithmetic number, because the mean of its divisors is an integer number (198531541).

Almost surely, 2^397063081 is an apocalyptic number.

It is an amenable number.

397063081 is a deficient number, since it is larger than the sum of its proper divisors (1).

397063081 is an equidigital number, since it uses as much as digits as its factorization.

397063081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 397063081 is about 19926.4417546134. The cubic root of 397063081 is about 734.9985845377.

The spelling of 397063081 in words is "three hundred ninety-seven million, sixty-three thousand, eighty-one".