84468138 has 16 divisors (see below), whose sum is σ = 178873920. Its totient is φ = 26499776.

The previous prime is 84468127. The next prime is 84468157. The reversal of 84468138 is 83186448.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 84468138.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413958 + ... + 414161.

It is an arithmetic number, because the mean of its divisors is an integer number (11179620).

Almost surely, 2^84468138 is an apocalyptic number.

84468138 is an abundant number, since it is smaller than the sum of its proper divisors (94405782).

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

84468138 is a wasteful number, since it uses less digits than its factorization.

84468138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828141.

The product of its digits is 147456, while the sum is 42.

The square root of 84468138 is about 9190.6549276969. The cubic root of 84468138 is about 438.7639863724.

The spelling of 84468138 in words is "eighty-four million, four hundred sixty-eight thousand, one hundred thirty-eight".