84221412 has 96 divisors (see below), whose sum is σ = 222082560. Its totient is φ = 24625920.

The previous prime is 84221393. The next prime is 84221429. The reversal of 84221412 is 21412248.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 787063 + ... + 787169.

It is an arithmetic number, because the mean of its divisors is an integer number (2313360).

Almost surely, 2^84221412 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 84221412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111041280).

84221412 is an abundant number, since it is smaller than the sum of its proper divisors (137861148).

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

84221412 is a wasteful number, since it uses less digits than its factorization.

84221412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 279 counting only the distinct ones).

The product of its digits is 1024, while the sum is 24.

The square root of 84221412 is about 9177.2224556235. Note that the first 3 decimals coincide. The cubic root of 84221412 is about 438.3363692902.

The spelling of 84221412 in words is "eighty-four million, two hundred twenty-one thousand, four hundred twelve".