408398 has 8 divisors (see below), whose sum is σ = 623160. Its totient is φ = 200680.

The previous prime is 408389. The next prime is 408403. The reversal of 408398 is 893804.

408398 is nontrivially palindromic in base 15.

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

It is a congruent number.

It is an unprimeable number.

408398 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 1613 + ... + 1848.

It is an arithmetic number, because the mean of its divisors is an integer number (77895).

2⁴⁰⁸³⁹⁸ is an apocalyptic number.

408398 is a deficient number, since it is larger than the sum of its proper divisors (214762).

408398 is a wasteful number, since it uses less digits than its factorization.

408398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3522.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 408398 is about 639.0602475510. The cubic root of 408398 is about 74.1927044602.

The spelling of 408398 in words is "four hundred eight thousand, three hundred ninety-eight".