396781223 has 2 divisors, whose sum is σ = 396781224. Its totient is φ = 396781222.

The previous prime is 396781163. The next prime is 396781249. The reversal of 396781223 is 322187693.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 396781223 - 2⁶ = 396781159 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396781423) 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, 198390611 + 198390612.

It is an arithmetic number, because the mean of its divisors is an integer number (198390612).

Almost surely, 2^396781223 is an apocalyptic number.

396781223 is a deficient number, since it is larger than the sum of its proper divisors (1).

396781223 is an equidigital number, since it uses as much as digits as its factorization.

396781223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 41.

The square root of 396781223 is about 19919.3680371642. The cubic root of 396781223 is about 734.8246287445.

The spelling of 396781223 in words is "three hundred ninety-six million, seven hundred eighty-one thousand, two hundred twenty-three".