406838 has 4 divisors (see below), whose sum is σ = 610260. Its totient is φ = 203418.

The previous prime is 406837. The next prime is 406859. The reversal of 406838 is 838604.

406838 is nontrivially palindromic in base 16.

It is a semiprime because it is the product of two primes.

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 406838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101708 + ... + 101711.

It is an arithmetic number, because the mean of its divisors is an integer number (152565).

2⁴⁰⁶⁸³⁸ is an apocalyptic number.

406838 is a deficient number, since it is larger than the sum of its proper divisors (203422).

406838 is a wasteful number, since it uses less digits than its factorization.

406838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203421.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 406838 is about 637.8385375626. The cubic root of 406838 is about 74.0981167449.

The spelling of 406838 in words is "four hundred six thousand, eight hundred thirty-eight".