408829 has 4 divisors (see below), whose sum is σ = 410176. Its totient is φ = 407484.

The previous prime is 408817. The next prime is 408841. The reversal of 408829 is 928804.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (408817) and next prime (408841).

It is a cyclic number.

It is not a de Polignac number, because 408829 - 2⁷ = 408701 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 408829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22 + ... + 904.

It is an arithmetic number, because the mean of its divisors is an integer number (102544).

2⁴⁰⁸⁸²⁹ is an apocalyptic number.

It is an amenable number.

408829 is a deficient number, since it is larger than the sum of its proper divisors (1347).

408829 is an equidigital number, since it uses as much as digits as its factorization.

408829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 408829 is about 639.3973725314. The cubic root of 408829 is about 74.2187948698.

The spelling of 408829 in words is "four hundred eight thousand, eight hundred twenty-nine".