390808 has 16 divisors (see below), whose sum is σ = 799560. Its totient is φ = 177600.

The previous prime is 390791. The next prime is 390809. The reversal of 390808 is 808093.

390808 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390809) 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, 2133 + ... + 2308.

2³⁹⁰⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

390808 is an abundant number, since it is smaller than the sum of its proper divisors (408752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

390808 is a wasteful number, since it uses less digits than its factorization.

390808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4458 (or 4454 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 390808 is about 625.1463828576. The cubic root of 390808 is about 73.1118570384. Note that the first 3 decimals are identical.

The spelling of 390808 in words is "three hundred ninety thousand, eight hundred eight".