84390198 has 16 divisors (see below), whose sum is σ = 170330160. Its totient is φ = 27871776.

The previous prime is 84390179. The next prime is 84390211. The reversal of 84390198 is 89109348.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63865 + ... + 65172.

It is an arithmetic number, because the mean of its divisors is an integer number (10645635).

Almost surely, 2^84390198 is an apocalyptic number.

84390198 is an abundant number, since it is smaller than the sum of its proper divisors (85939962).

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

84390198 is a wasteful number, since it uses less digits than its factorization.

84390198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129151.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 84390198 is about 9186.4137725230. The cubic root of 84390198 is about 438.6289935045.

The spelling of 84390198 in words is "eighty-four million, three hundred ninety thousand, one hundred ninety-eight".