396831155 has 24 divisors (see below), whose sum is σ = 571824000. Its totient is φ = 263329920.

The previous prime is 396831143. The next prime is 396831257. The reversal of 396831155 is 551138693.

It is not a de Polignac number, because 396831155 - 2⁸ = 396830899 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 18530 + ... + 33719.

It is an arithmetic number, because the mean of its divisors is an integer number (23826000).

Almost surely, 2^396831155 is an apocalyptic number.

396831155 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

396831155 is a deficient number, since it is larger than the sum of its proper divisors (174992845).

396831155 is a wasteful number, since it uses less digits than its factorization.

396831155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52299 (or 52292 counting only the distinct ones).

The product of its digits is 97200, while the sum is 41.

The square root of 396831155 is about 19920.6213507511. The cubic root of 396831155 is about 734.8554515441.

The spelling of 396831155 in words is "three hundred ninety-six million, eight hundred thirty-one thousand, one hundred fifty-five".