406434 has 16 divisors (see below), whose sum is σ = 929088. Its totient is φ = 116112.

The previous prime is 406423. The next prime is 406447. The reversal of 406434 is 434604.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 406434.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 406434.

It is an unprimeable number.

406434 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 in 7 ways as a sum of consecutive naturals, for example, 4797 + ... + 4880.

It is an arithmetic number, because the mean of its divisors is an integer number (58068).

2⁴⁰⁶⁴³⁴ is an apocalyptic number.

406434 is an abundant number, since it is smaller than the sum of its proper divisors (522654).

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

406434 is a wasteful number, since it uses less digits than its factorization.

406434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9689.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 406434 is about 637.5217643344. The cubic root of 406434 is about 74.0735815461.

The spelling of 406434 in words is "four hundred six thousand, four hundred thirty-four".