8420689798 has 16 divisors (see below), whose sum is σ = 13700235024. Its totient is φ = 3866026240.

The previous prime is 8420689789. The next prime is 8420689813. The reversal of 8420689798 is 8979860248.

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, 3018940 + ... + 3021727.

It is an arithmetic number, because the mean of its divisors is an integer number (856264689).

Almost surely, 2^8420689798 is an apocalyptic number.

8420689798 is a deficient number, since it is larger than the sum of its proper divisors (5279545226).

8420689798 is a wasteful number, since it uses less digits than its factorization.

8420689798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6040727.

The product of its (nonzero) digits is 13934592, while the sum is 61.

The square root of 8420689798 is about 91764.3165832994. The cubic root of 8420689798 is about 2034.4603162932.

The spelling of 8420689798 in words is "eight billion, four hundred twenty million, six hundred eighty-nine thousand, seven hundred ninety-eight".