7989898 has 32 divisors (see below), whose sum is σ = 14774400. Its totient is φ = 3162624.

The previous prime is 7989869. The next prime is 7989907. The reversal of 7989898 is 8989897.

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 15 ways as a sum of consecutive naturals, for example, 13758 + ... + 14326.

It is an arithmetic number, because the mean of its divisors is an integer number (461700).

Almost surely, 2^7989898 is an apocalyptic number.

7989898 is a deficient number, since it is larger than the sum of its proper divisors (6784502).

7989898 is a wasteful number, since it uses less digits than its factorization.

7989898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654.

The product of its digits is 2612736, while the sum is 58.

The square root of 7989898 is about 2826.6407624599. The cubic root of 7989898 is about 199.9157812076.

Subtracting 7989898 from its reverse (8989897), we obtain a palindrome (999999).

The spelling of 7989898 in words is "seven million, nine hundred eighty-nine thousand, eight hundred ninety-eight".