84543894 has 12 divisors (see below), whose sum is σ = 183178476. Its totient is φ = 28181292.

The previous prime is 84543887. The next prime is 84543911. The reversal of 84543894 is 49834548.

It is a happy number.

It is a congruent number.

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, 2348424 + ... + 2348459.

It is an arithmetic number, because the mean of its divisors is an integer number (15264873).

Almost surely, 2^84543894 is an apocalyptic number.

84543894 is an abundant number, since it is smaller than the sum of its proper divisors (98634582).

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

84543894 is a wasteful number, since it uses less digits than its factorization.

84543894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4696891 (or 4696888 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 84543894 is about 9194.7753643034. The cubic root of 84543894 is about 438.8951169714.

The spelling of 84543894 in words is "eighty-four million, five hundred forty-three thousand, eight hundred ninety-four".