998797899 has 16 divisors (see below), whose sum is σ = 1472701824. Its totient is φ = 597038400.

The previous prime is 998797873. The next prime is 998797907.

998797899 is nontrivially palindromic in base 10.

998797899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 998797899 - 2⁷ = 998797771 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 998797899.

It is not an unprimeable number, because it can be changed into a prime (998797819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204897 + ... + 209714.

It is an arithmetic number, because the mean of its divisors is an integer number (92043864).

Almost surely, 2^998797899 is an apocalyptic number.

998797899 is a deficient number, since it is larger than the sum of its proper divisors (473903925).

998797899 is a wasteful number, since it uses less digits than its factorization.

998797899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414698.

The product of its digits is 185177664, while the sum is 75.

The square root of 998797899 is about 31603.7640005111. The cubic root of 998797899 is about 999.5991389986.

It can be divided in two parts, 998 and 797899, that added together give a palindrome (798897).

The spelling of 998797899 in words is "nine hundred ninety-eight million, seven hundred ninety-seven thousand, eight hundred ninety-nine".