396967841 has 2 divisors, whose sum is σ = 396967842. Its totient is φ = 396967840.

The previous prime is 396967819. The next prime is 396967847. The reversal of 396967841 is 148769693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 349839616 + 47128225 = 18704^2 + 6865^2 .

It is a cyclic number.

It is not a de Polignac number, because 396967841 - 2⁶ = 396967777 is a prime.

It is not a weakly prime, because it can be changed into another prime (396967847) 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, 198483920 + 198483921.

It is an arithmetic number, because the mean of its divisors is an integer number (198483921).

Almost surely, 2^396967841 is an apocalyptic number.

It is an amenable number.

396967841 is a deficient number, since it is larger than the sum of its proper divisors (1).

396967841 is an equidigital number, since it uses as much as digits as its factorization.

396967841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 53.

The square root of 396967841 is about 19924.0518218559. The cubic root of 396967841 is about 734.9398139744.

The spelling of 396967841 in words is "three hundred ninety-six million, nine hundred sixty-seven thousand, eight hundred forty-one".