408199856 has 20 divisors (see below), whose sum is σ = 792787800. Its totient is φ = 203609472.

The previous prime is 408199849. The next prime is 408199859. The reversal of 408199856 is 658991804.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (408199859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23741 + ... + 37148.

It is an arithmetic number, because the mean of its divisors is an integer number (39639390).

Almost surely, 2^408199856 is an apocalyptic number.

It is an amenable number.

408199856 is a deficient number, since it is larger than the sum of its proper divisors (384587944).

408199856 is a wasteful number, since it uses less digits than its factorization.

408199856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61316 (or 61310 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 408199856 is about 20203.9564442215. The cubic root of 408199856 is about 741.8070373429.

The spelling of 408199856 in words is "four hundred eight million, one hundred ninety-nine thousand, eight hundred fifty-six".