396179985 has 48 divisors (see below), whose sum is σ = 685224000. Its totient is φ = 195369984.

The previous prime is 396179957. The next prime is 396180041. The reversal of 396179985 is 589971693.

It is not a de Polignac number, because 396179985 - 2¹¹ = 396177937 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 254991 + ... + 256539.

It is an arithmetic number, because the mean of its divisors is an integer number (14275500).

Almost surely, 2^396179985 is an apocalyptic number.

It is an amenable number.

396179985 is a deficient number, since it is larger than the sum of its proper divisors (289044015).

396179985 is a wasteful number, since it uses less digits than its factorization.

396179985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650 (or 1633 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 57.

The square root of 396179985 is about 19904.2705216745. The cubic root of 396179985 is about 734.4532840283.

The spelling of 396179985 in words is "three hundred ninety-six million, one hundred seventy-nine thousand, nine hundred eighty-five".