84343812 has 96 divisors (see below), whose sum is σ = 242457600. Its totient is φ = 22280832.

The previous prime is 84343799. The next prime is 84343813. The reversal of 84343812 is 21834348.

It is a super-2 number, since 2×84343812² = 14227757245382688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84343813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68014 + ... + 69242.

It is an arithmetic number, because the mean of its divisors is an integer number (2525600).

Almost surely, 2^84343812 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 84343812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121228800).

84343812 is an abundant number, since it is smaller than the sum of its proper divisors (158113788).

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

84343812 is a wasteful number, since it uses less digits than its factorization.

84343812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305 (or 1303 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 84343812 is about 9183.8887188380. Note that the first 3 decimals coincide. The cubic root of 84343812 is about 438.5486130260.

It can be divided in two parts, 8434 and 3812, that added together give a triangular number (12246 = T₁₅₆).

The spelling of 84343812 in words is "eighty-four million, three hundred forty-three thousand, eight hundred twelve".