408998 has 8 divisors (see below), whose sum is σ = 630192. Its totient is φ = 198936.

The previous prime is 408997. The next prime is 409007. The reversal of 408998 is 899804.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408997) 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 3 ways as a sum of consecutive naturals, for example, 2690 + ... + 2837.

It is an arithmetic number, because the mean of its divisors is an integer number (78774).

2⁴⁰⁸⁹⁹⁸ is an apocalyptic number.

408998 is a deficient number, since it is larger than the sum of its proper divisors (221194).

408998 is a wasteful number, since it uses less digits than its factorization.

408998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5566.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 408998 is about 639.5295145652. The cubic root of 408998 is about 74.2290202113.

The spelling of 408998 in words is "four hundred eight thousand, nine hundred ninety-eight".