408813 has 16 divisors (see below), whose sum is σ = 583680. Its totient is φ = 254016.

The previous prime is 408809. The next prime is 408817. The reversal of 408813 is 318804.

It is an interprime number because it is at equal distance from previous prime (408809) and next prime (408817).

It is not a de Polignac number, because 408813 - 2² = 408809 is a prime.

408813 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3156 + ... + 3282.

It is an arithmetic number, because the mean of its divisors is an integer number (36480).

2⁴⁰⁸⁸¹³ is an apocalyptic number.

It is an amenable number.

408813 is a deficient number, since it is larger than the sum of its proper divisors (174867).

408813 is a wasteful number, since it uses less digits than its factorization.

408813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 408813 is about 639.3848606278. The cubic root of 408813 is about 74.2178266441.

Subtracting from 408813 its reverse (318804), we obtain a palindrome (90009).

It can be divided in two parts, 408 and 813, that added together give a palindrome (1221).

The spelling of 408813 in words is "four hundred eight thousand, eight hundred thirteen".