7989798 has 8 divisors (see below), whose sum is σ = 15979608. Its totient is φ = 2663264.

The previous prime is 7989769. The next prime is 7989851. The reversal of 7989798 is 8979897.

It is a happy number.

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

7989798 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665811 + ... + 665822.

It is an arithmetic number, because the mean of its divisors is an integer number (1997451).

Almost surely, 2^7989798 is an apocalyptic number.

7989798 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7989798 is a wasteful number, since it uses less digits than its factorization.

7989798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331638.

The product of its digits is 2286144, while the sum is 57.

The square root of 7989798 is about 2826.6230735632. The cubic root of 7989798 is about 199.9149471685.

Subtracting 7989798 from its reverse (8979897), we obtain a palindrome (990099).

The spelling of 7989798 in words is "seven million, nine hundred eighty-nine thousand, seven hundred ninety-eight".