395409856 has 28 divisors (see below), whose sum is σ = 785669752. Its totient is φ = 197445888.

The previous prime is 395409841. The next prime is 395409899. The reversal of 395409856 is 658904593.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50971 + ... + 58213.

It is an arithmetic number, because the mean of its divisors is an integer number (28059634).

Almost surely, 2^395409856 is an apocalyptic number.

It is an amenable number.

395409856 is a deficient number, since it is larger than the sum of its proper divisors (390259896).

395409856 is an equidigital number, since it uses as much as digits as its factorization.

395409856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8108 (or 8098 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 49.

The square root of 395409856 is about 19884.9152877250. The cubic root of 395409856 is about 733.9770773430.

The spelling of 395409856 in words is "three hundred ninety-five million, four hundred nine thousand, eight hundred fifty-six".