8389505998 has 16 divisors (see below), whose sum is σ = 12838669776. Its totient is φ = 4110159040.

The previous prime is 8389505987. The next prime is 8389506007. The reversal of 8389505998 is 8995059838.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28665 + ... + 132667.

It is an arithmetic number, because the mean of its divisors is an integer number (802416861).

Almost surely, 2^8389505998 is an apocalyptic number.

8389505998 is a deficient number, since it is larger than the sum of its proper divisors (4449163778).

8389505998 is a wasteful number, since it uses less digits than its factorization.

8389505998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104819.

The product of its (nonzero) digits is 27993600, while the sum is 64.

The square root of 8389505998 is about 91594.2465332840. The cubic root of 8389505998 is about 2031.9458477454.

The spelling of 8389505998 in words is "eight billion, three hundred eighty-nine million, five hundred five thousand, nine hundred ninety-eight".