84390222 has 32 divisors (see below), whose sum is σ = 193248000. Its totient is φ = 24067008.

The previous prime is 84390217. The next prime is 84390233. The reversal of 84390222 is 22209348.

It is a self number, because there is not a number n which added to its sum of digits gives 84390222.

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 15 ways as a sum of consecutive naturals, for example, 26154 + ... + 29202.

It is an arithmetic number, because the mean of its divisors is an integer number (6039000).

Almost surely, 2^84390222 is an apocalyptic number.

84390222 is an abundant number, since it is smaller than the sum of its proper divisors (108857778).

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

84390222 is a wasteful number, since it uses less digits than its factorization.

84390222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3720.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 84390222 is about 9186.4150787998. The cubic root of 84390222 is about 438.6290350855.

The spelling of 84390222 in words is "eighty-four million, three hundred ninety thousand, two hundred twenty-two".