396781163 has 2 divisors, whose sum is σ = 396781164. Its totient is φ = 396781162.

The previous prime is 396781159. The next prime is 396781223. The reversal of 396781163 is 361187693.

It is a weak prime.

It is an emirp because it is prime and its reverse (361187693) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 396781163 - 2² = 396781159 is a prime.

It is not a weakly prime, because it can be changed into another prime (396781153) 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, 198390581 + 198390582.

It is an arithmetic number, because the mean of its divisors is an integer number (198390582).

Almost surely, 2^396781163 is an apocalyptic number.

396781163 is a deficient number, since it is larger than the sum of its proper divisors (1).

396781163 is an equidigital number, since it uses as much as digits as its factorization.

396781163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 44.

The square root of 396781163 is about 19919.3665310923. The cubic root of 396781163 is about 734.8245917052.

The spelling of 396781163 in words is "three hundred ninety-six million, seven hundred eighty-one thousand, one hundred sixty-three".