84442212 has 18 divisors (see below), whose sum is σ = 213451238. Its totient is φ = 28147392.

The previous prime is 84442187. The next prime is 84442249. The reversal of 84442212 is 21224448.

84442212 is a `hidden beast` number, since 8 + 4 + 442 + 212 = 666.

It can be written as a sum of positive squares in only one way, i.e., 75585636 + 8856576 = 8694^2 + 2976^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1172773 + ... + 1172844.

Almost surely, 2^84442212 is an apocalyptic number.

It is an amenable number.

84442212 is an abundant number, since it is smaller than the sum of its proper divisors (129009026).

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

84442212 is a wasteful number, since it uses less digits than its factorization.

84442212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2345627 (or 2345622 counting only the distinct ones).

The product of its digits is 4096, while the sum is 27.

The square root of 84442212 is about 9189.2443650172. The cubic root of 84442212 is about 438.7190914988.

The spelling of 84442212 in words is "eighty-four million, four hundred forty-two thousand, two hundred twelve".