396581338 has 16 divisors (see below), whose sum is σ = 663016320. Its totient is φ = 176803776.

The previous prime is 396581327. The next prime is 396581359. The reversal of 396581338 is 833185693.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 306306 + ... + 307597.

It is an arithmetic number, because the mean of its divisors is an integer number (41438520).

Almost surely, 2^396581338 is an apocalyptic number.

396581338 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

396581338 is a deficient number, since it is larger than the sum of its proper divisors (266434982).

396581338 is a wasteful number, since it uses less digits than its factorization.

396581338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613941.

The product of its digits is 466560, while the sum is 46.

The square root of 396581338 is about 19914.3500521609. The cubic root of 396581338 is about 734.7012147287.

The spelling of 396581338 in words is "three hundred ninety-six million, five hundred eighty-one thousand, three hundred thirty-eight".