406858 has 4 divisors (see below), whose sum is σ = 610290. Its totient is φ = 203428.

The previous prime is 406837. The next prime is 406859. The reversal of 406858 is 858604.

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

It can be written as a sum of positive squares in only one way, i.e., 405769 + 1089 = 637^2 + 33^2 .

It is not an unprimeable number, because it can be changed into a prime (406859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101713 + ... + 101716.

2⁴⁰⁶⁸⁵⁸ is an apocalyptic number.

406858 is a deficient number, since it is larger than the sum of its proper divisors (203432).

406858 is a wasteful number, since it uses less digits than its factorization.

406858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203431.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 406858 is about 637.8542153188. The cubic root of 406858 is about 74.0993309366.

The spelling of 406858 in words is "four hundred six thousand, eight hundred fifty-eight".