408822 has 16 divisors (see below), whose sum is σ = 831792. Its totient is φ = 133920.

The previous prime is 408817. The next prime is 408841. The reversal of 408822 is 228804.

It is a junction number, because it is equal to n+sod(n) for n = 408792 and 408801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193 + ... + 924.

It is an arithmetic number, because the mean of its divisors is an integer number (51987).

2⁴⁰⁸⁸²² is an apocalyptic number.

408822 is an abundant number, since it is smaller than the sum of its proper divisors (422970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

408822 is a wasteful number, since it uses less digits than its factorization.

408822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183.

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 408822 is about 639.3918986037. The cubic root of 408822 is about 74.2183712742.

The spelling of 408822 in words is "four hundred eight thousand, eight hundred twenty-two".