84400239018 has 8 divisors (see below), whose sum is σ = 168800478048. Its totient is φ = 28133413004.

The previous prime is 84400238987. The next prime is 84400239019. The reversal of 84400239018 is 81093200448.

It is a sphenic number, since it is the product of 3 distinct primes.

84400239018 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (84400239019) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7033353246 + ... + 7033353257.

It is an arithmetic number, because the mean of its divisors is an integer number (21100059756).

Almost surely, 2^84400239018 is an apocalyptic number.

84400239018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

84400239018 is a wasteful number, since it uses less digits than its factorization.

84400239018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14066706508.

The product of its (nonzero) digits is 55296, while the sum is 39.

The spelling of 84400239018 in words is "eighty-four billion, four hundred million, two hundred thirty-nine thousand, eighteen".