84239040798 has 160 divisors (see below), whose sum is σ = 219349202688. Its totient is φ = 23880096000.

The previous prime is 84239040731. The next prime is 84239040811. The reversal of 84239040798 is 89704093248.

84239040798 is a `hidden beast` number, since 8 + 423 + 90 + 40 + 7 + 98 = 666.

It is a super-3 number, since 3×84239040798³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5050773 + ... + 5067423.

Almost surely, 2^84239040798 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84239040798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109674601344).

84239040798 is an abundant number, since it is smaller than the sum of its proper divisors (135110161890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84239040798 is a wasteful number, since it uses less digits than its factorization.

84239040798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16860 (or 16851 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 84239040798 in words is "eighty-four billion, two hundred thirty-nine million, forty thousand, seven hundred ninety-eight".