84879918 has 12 divisors (see below), whose sum is σ = 183906528. Its totient is φ = 28293300.

The previous prime is 84879863. The next prime is 84879919. The reversal of 84879918 is 81997848.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84879919) 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 in 5 ways as a sum of consecutive naturals, for example, 2357758 + ... + 2357793.

It is an arithmetic number, because the mean of its divisors is an integer number (15325544).

Almost surely, 2^84879918 is an apocalyptic number.

84879918 is an abundant number, since it is smaller than the sum of its proper divisors (99026610).

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

84879918 is a wasteful number, since it uses less digits than its factorization.

84879918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4715559 (or 4715556 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 54.

The square root of 84879918 is about 9213.0297948069. The cubic root of 84879918 is about 439.4758186170.

The spelling of 84879918 in words is "eighty-four million, eight hundred seventy-nine thousand, nine hundred eighteen".