396215983 has 2 divisors, whose sum is σ = 396215984. Its totient is φ = 396215982.

The previous prime is 396215977. The next prime is 396215993. The reversal of 396215983 is 389512693.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (389512693) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 396215983 - 2⁹ = 396215471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396215903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198107991 + 198107992.

It is an arithmetic number, because the mean of its divisors is an integer number (198107992).

Almost surely, 2^396215983 is an apocalyptic number.

396215983 is a deficient number, since it is larger than the sum of its proper divisors (1).

396215983 is an equidigital number, since it uses as much as digits as its factorization.

396215983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 46.

The square root of 396215983 is about 19905.1747794386. The cubic root of 396215983 is about 734.4755281678.

The spelling of 396215983 in words is "three hundred ninety-six million, two hundred fifteen thousand, nine hundred eighty-three".