403388 has 6 divisors (see below), whose sum is σ = 705936. Its totient is φ = 201692.

The previous prime is 403387. The next prime is 403391. The reversal of 403388 is 883304.

403388 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 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403387) 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 as a sum of consecutive naturals, namely, 50420 + ... + 50427.

It is an arithmetic number, because the mean of its divisors is an integer number (117656).

2⁴⁰³³⁸⁸ is an apocalyptic number.

It is an amenable number.

403388 is a deficient number, since it is larger than the sum of its proper divisors (302548).

403388 is a wasteful number, since it uses less digits than its factorization.

403388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100851 (or 100849 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 403388 is about 635.1283334886. The cubic root of 403388 is about 73.8880703758. Note that the first 3 decimals are identical.

The spelling of 403388 in words is "four hundred three thousand, three hundred eighty-eight".