409868 has 12 divisors (see below), whose sum is σ = 755160. Its totient is φ = 194112.

The previous prime is 409867. The next prime is 409879. The reversal of 409868 is 868904.

It is not an unprimeable number, because it can be changed into a prime (409861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2621 + ... + 2772.

It is an arithmetic number, because the mean of its divisors is an integer number (62930).

2⁴⁰⁹⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

409868 is a deficient number, since it is larger than the sum of its proper divisors (345292).

409868 is a wasteful number, since it uses less digits than its factorization.

409868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5416 (or 5414 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 409868 is about 640.2093407628. The cubic root of 409868 is about 74.2816150175.

The spelling of 409868 in words is "four hundred nine thousand, eight hundred sixty-eight".