84421227996 has 576 divisors, whose sum is σ = 279603878400. Its totient is φ = 21873825792.

The previous prime is 84421227949. The next prime is 84421228009. The reversal of 84421227996 is 69972212448.

It is a happy number.

84421227996 is a `hidden beast` number, since 8 + 442 + 122 + 79 + 9 + 6 = 666.

It is a super-2 number, since 2×84421227996² (a number of 23 digits) contains 22 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 (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 537714750 + ... + 537714906.

It is an arithmetic number, because the mean of its divisors is an integer number (485423400).

Almost surely, 2^84421227996 is an apocalyptic number.

84421227996 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84421227996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139801939200).

84421227996 is an abundant number, since it is smaller than the sum of its proper divisors (195182650404).

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

84421227996 is a wasteful number, since it uses less digits than its factorization.

84421227996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 368 counting only the distinct ones).

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

The spelling of 84421227996 in words is "eighty-four billion, four hundred twenty-one million, two hundred twenty-seven thousand, nine hundred ninety-six".