84406018 has 16 divisors (see below), whose sum is σ = 134028000. Its totient is φ = 39755232.

The previous prime is 84406009. The next prime is 84406019. The reversal of 84406018 is 81060448.

It is not an unprimeable number, because it can be changed into a prime (84406019) 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 7 ways as a sum of consecutive naturals, for example, 598 + ... + 13006.

It is an arithmetic number, because the mean of its divisors is an integer number (8376750).

Almost surely, 2^84406018 is an apocalyptic number.

84406018 is a deficient number, since it is larger than the sum of its proper divisors (49621982).

84406018 is a wasteful number, since it uses less digits than its factorization.

84406018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12609.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 84406018 is about 9187.2747863553. The cubic root of 84406018 is about 438.6564006255.

The spelling of 84406018 in words is "eighty-four million, four hundred six thousand, eighteen".