84455812 has 18 divisors (see below), whose sum is σ = 171928302. Its totient is φ = 36195264.

The previous prime is 84455809. The next prime is 84455821. The reversal of 84455812 is 21855448.

It can be written as a sum of positive squares in only one way, i.e., 70795396 + 13660416 = 8414^2 + 3696^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 215253 + ... + 215644.

Almost surely, 2^84455812 is an apocalyptic number.

It is an amenable number.

84455812 is an abundant number, since it is smaller than the sum of its proper divisors (87472490).

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

84455812 is a wasteful number, since it uses less digits than its factorization.

84455812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430915 (or 430906 counting only the distinct ones).

The product of its digits is 51200, while the sum is 37.

The square root of 84455812 is about 9189.9843307810. The cubic root of 84455812 is about 438.7426431452.

The spelling of 84455812 in words is "eighty-four million, four hundred fifty-five thousand, eight hundred twelve".