396509804 has 12 divisors (see below), whose sum is σ = 694276128. Its totient is φ = 198145200.

The previous prime is 396509783. The next prime is 396509807. The reversal of 396509804 is 408905693.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (396509807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19007 + ... + 33974.

It is an arithmetic number, because the mean of its divisors is an integer number (57856344).

Almost surely, 2^396509804 is an apocalyptic number.

It is an amenable number.

396509804 is a deficient number, since it is larger than the sum of its proper divisors (297766324).

396509804 is a wasteful number, since it uses less digits than its factorization.

396509804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54856 (or 54854 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 396509804 is about 19912.5539296194. The cubic root of 396509804 is about 734.6570377660.

The spelling of 396509804 in words is "three hundred ninety-six million, five hundred nine thousand, eight hundred four".