408889 has 8 divisors (see below), whose sum is σ = 447552. Its totient is φ = 371280.

The previous prime is 408869. The next prime is 408911. The reversal of 408889 is 988804.

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

It is not a de Polignac number, because 408889 - 2⁵ = 408857 is a prime.

It is a magnanimous number.

It is a Duffinian 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 702 + ... + 1144.

It is an arithmetic number, because the mean of its divisors is an integer number (55944).

2⁴⁰⁸⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

408889 is a deficient number, since it is larger than the sum of its proper divisors (38663).

408889 is a wasteful number, since it uses less digits than its factorization.

408889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527.

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 408889 is about 639.4442899894. Note that the first 3 decimals coincide. The cubic root of 408889 is about 74.2224254911. Note that the first 3 decimals are identical.

The spelling of 408889 in words is "four hundred eight thousand, eight hundred eighty-nine".