84403643904 has 240 divisors, whose sum is σ = 256085118432. Its totient is φ = 26710278144.

The previous prime is 84403643903. The next prime is 84403643939. The reversal of 84403643904 is 40934630448.

It is a happy number.

It is a super-2 number, since 2×84403643904² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 84403643904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84403643903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14516902 + ... + 14522714.

Almost surely, 2^84403643904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84403643904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128042559216).

84403643904 is an abundant number, since it is smaller than the sum of its proper divisors (171681474528).

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

84403643904 is a wasteful number, since it uses less digits than its factorization.

84403643904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5997 (or 5978 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 45.

The spelling of 84403643904 in words is "eighty-four billion, four hundred three million, six hundred forty-three thousand, nine hundred four".