789998 has 16 divisors (see below), whose sum is σ = 1306800. Its totient is φ = 355200.

The previous prime is 789979. The next prime is 790003. The reversal of 789998 is 899987.

789998 is an esthetic number in base 12, because in such base its adjacent digits differ by 1.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 789998.

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 7 ways as a sum of consecutive naturals, for example, 3158 + ... + 3398.

It is an arithmetic number, because the mean of its divisors is an integer number (81675).

2⁷⁸⁹⁹⁹⁸ is an apocalyptic number.

789998 is a deficient number, since it is larger than the sum of its proper divisors (516802).

789998 is a wasteful number, since it uses less digits than its factorization.

789998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403.

The product of its digits is 326592, while the sum is 50.

The square root of 789998 is about 888.8183166429. The cubic root of 789998 is about 92.4432766424.

It can be divided in two parts, 7899 and 98, that added together give a palindrome (7997).

The spelling of 789998 in words is "seven hundred eighty-nine thousand, nine hundred ninety-eight".