406386 has 24 divisors (see below), whose sum is σ = 892944. Its totient is φ = 133560.

The previous prime is 406381. The next prime is 406397. The reversal of 406386 is 683604.

406386 = T₂₈ + T₂₉ + ... + T₁₃₄.

406386 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 (406381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1821 + ... + 2031.

It is an arithmetic number, because the mean of its divisors is an integer number (37206).

2⁴⁰⁶³⁸⁶ is an apocalyptic number.

406386 is an abundant number, since it is smaller than the sum of its proper divisors (486558).

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

406386 is a wasteful number, since it uses less digits than its factorization.

406386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 406386 is about 637.4841174492. The cubic root of 406386 is about 74.0706653925.

The spelling of 406386 in words is "four hundred six thousand, three hundred eighty-six".