843998 has 8 divisors (see below), whose sum is σ = 1270080. Its totient is φ = 420640.

The previous prime is 843911. The next prime is 844001. The reversal of 843998 is 899348.

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

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, 518 + ... + 1398.

It is an arithmetic number, because the mean of its divisors is an integer number (158760).

2⁸⁴³⁹⁹⁸ is an apocalyptic number.

843998 is a deficient number, since it is larger than the sum of its proper divisors (426082).

843998 is a wasteful number, since it uses less digits than its factorization.

843998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362.

The product of its digits is 62208, while the sum is 41.

The square root of 843998 is about 918.6936377270. The cubic root of 843998 is about 94.5033359217.

The spelling of 843998 in words is "eight hundred forty-three thousand, nine hundred ninety-eight".