396531697 has 2 divisors, whose sum is σ = 396531698. Its totient is φ = 396531696.

The previous prime is 396531679. The next prime is 396531713. The reversal of 396531697 is 796135693.

Together with previous prime (396531679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 371371441 + 25160256 = 19271^2 + 5016^2 .

It is a cyclic number.

It is not a de Polignac number, because 396531697 - 2¹⁵ = 396498929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 396531697.

It is not a weakly prime, because it can be changed into another prime (396531617) 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, 198265848 + 198265849.

It is an arithmetic number, because the mean of its divisors is an integer number (198265849).

Almost surely, 2^396531697 is an apocalyptic number.

It is an amenable number.

396531697 is a deficient number, since it is larger than the sum of its proper divisors (1).

396531697 is an equidigital number, since it uses as much as digits as its factorization.

396531697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 918540, while the sum is 49.

The square root of 396531697 is about 19913.1036506116. The cubic root of 396531697 is about 734.6705587016.

The spelling of 396531697 in words is "three hundred ninety-six million, five hundred thirty-one thousand, six hundred ninety-seven".