408988 has 12 divisors (see below), whose sum is σ = 728280. Its totient is φ = 200912.

The previous prime is 408979. The next prime is 408997. The reversal of 408988 is 889804.

It is an interprime number because it is at equal distance from previous prime (408979) and next prime (408997).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 631 + ... + 1102.

It is an arithmetic number, because the mean of its divisors is an integer number (60690).

2⁴⁰⁸⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

408988 is a deficient number, since it is larger than the sum of its proper divisors (319292).

408988 is a wasteful number, since it uses less digits than its factorization.

408988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796 (or 1794 counting only the distinct ones).

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

The square root of 408988 is about 639.5216962700. The cubic root of 408988 is about 74.2284152399.

It can be divided in two parts, 40898 and 8, that multiplied together give a square (327184 = 572²).

The spelling of 408988 in words is "four hundred eight thousand, nine hundred eighty-eight".