403808 has 12 divisors (see below), whose sum is σ = 795060. Its totient is φ = 201888.

The previous prime is 403787. The next prime is 403817. The reversal of 403808 is 808304.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6278 + ... + 6341.

It is an arithmetic number, because the mean of its divisors is an integer number (66255).

2⁴⁰³⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

403808 is a deficient number, since it is larger than the sum of its proper divisors (391252).

403808 is a wasteful number, since it uses less digits than its factorization.

403808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12629 (or 12621 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 403808 is about 635.4588893076. The cubic root of 403808 is about 73.9137051042.

Subtracting 403808 from its reverse (808304), we obtain a square (404496 = 636²).

The spelling of 403808 in words is "four hundred three thousand, eight hundred eight".