84669918 has 16 divisors (see below), whose sum is σ = 170228736. Its totient is φ = 28075160.

The previous prime is 84669901. The next prime is 84669919. The reversal of 84669918 is 81996648.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84669919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35796 + ... + 38087.

It is an arithmetic number, because the mean of its divisors is an integer number (10639296).

Almost surely, 2^84669918 is an apocalyptic number.

84669918 is an abundant number, since it is smaller than the sum of its proper divisors (85558818).

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

84669918 is a wasteful number, since it uses less digits than its factorization.

84669918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74079.

The product of its digits is 746496, while the sum is 51.

The square root of 84669918 is about 9201.6258346012. The cubic root of 84669918 is about 439.1130860262.

The spelling of 84669918 in words is "eighty-four million, six hundred sixty-nine thousand, nine hundred eighteen".