408866 has 8 divisors (see below), whose sum is σ = 620460. Its totient is φ = 202048.

The previous prime is 408857. The next prime is 408869. The reversal of 408866 is 668804.

It can be written as a sum of positive squares in 2 ways, for example, as 395641 + 13225 = 629^2 + 115^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (408869) by changing a digit.

408866 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 3 ways as a sum of consecutive naturals, for example, 971 + ... + 1326.

2⁴⁰⁸⁸⁶⁶ is an apocalyptic number.

408866 is a deficient number, since it is larger than the sum of its proper divisors (211594).

408866 is a wasteful number, since it uses less digits than its factorization.

408866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2388.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 408866 is about 639.4263053707. The cubic root of 408866 is about 74.2210337949.

The spelling of 408866 in words is "four hundred eight thousand, eight hundred sixty-six".