7989998 has 16 divisors (see below), whose sum is σ = 12383280. Its totient is φ = 3864000.

The previous prime is 7989973. The next prime is 7990001. The reversal of 7989998 is 8999897.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11048 + ... + 11748.

It is an arithmetic number, because the mean of its divisors is an integer number (773955).

Almost surely, 2^7989998 is an apocalyptic number.

7989998 is a deficient number, since it is larger than the sum of its proper divisors (4393282).

7989998 is a wasteful number, since it uses less digits than its factorization.

7989998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883.

The product of its digits is 2939328, while the sum is 59.

The square root of 7989998 is about 2826.6584512459. The cubic root of 7989998 is about 199.9166152397.

It can be divided in two parts, 79899 and 98, that added together give a palindrome (79997).

The spelling of 7989998 in words is "seven million, nine hundred eighty-nine thousand, nine hundred ninety-eight".