405388 has 6 divisors (see below), whose sum is σ = 709436. Its totient is φ = 202692.

The previous prime is 405373. The next prime is 405401. The reversal of 405388 is 883504.

405388 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 an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50670 + ... + 50677.

2⁴⁰⁵³⁸⁸ is an apocalyptic number.

It is an amenable number.

405388 is a deficient number, since it is larger than the sum of its proper divisors (304048).

405388 is a wasteful number, since it uses less digits than its factorization.

405388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101351 (or 101349 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 405388 is about 636.7008716815. The cubic root of 405388 is about 74.0099816095.

The spelling of 405388 in words is "four hundred five thousand, three hundred eighty-eight".