84980218 has 4 divisors (see below), whose sum is σ = 127470330. Its totient is φ = 42490108.

The previous prime is 84980209. The next prime is 84980219. The reversal of 84980218 is 81208948.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 51883209 + 33097009 = 7203^2 + 5753^2 .

It is not an unprimeable number, because it can be changed into a prime (84980219) by changing a digit.

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 as a sum of consecutive naturals, namely, 21245053 + ... + 21245056.

Almost surely, 2^84980218 is an apocalyptic number.

84980218 is a deficient number, since it is larger than the sum of its proper divisors (42490112).

84980218 is a wasteful number, since it uses less digits than its factorization.

84980218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42490111.

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 84980218 is about 9218.4715652867. The cubic root of 84980218 is about 439.6488555166.

The spelling of 84980218 in words is "eighty-four million, nine hundred eighty thousand, two hundred eighteen".