403888 has 10 divisors (see below), whose sum is σ = 782564. Its totient is φ = 201936.

The previous prime is 403877. The next prime is 403889. The reversal of 403888 is 888304.

403888 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (403889) by changing a digit.

403888 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12606 + ... + 12637.

2⁴⁰³⁸⁸⁸ is an apocalyptic number.

It is an amenable number.

403888 is a deficient number, since it is larger than the sum of its proper divisors (378676).

403888 is a wasteful number, since it uses less digits than its factorization.

403888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25251 (or 25245 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 403888 is about 635.5218328272. The cubic root of 403888 is about 73.9185858940.

Subtracting 403888 from its reverse (888304), we obtain a square (484416 = 696²).

The spelling of 403888 in words is "four hundred three thousand, eight hundred eighty-eight".