84999000 has 128 divisors (see below), whose sum is σ = 274622400. Its totient is φ = 21862400.

The previous prime is 84998959. The next prime is 84999001. The reversal of 84999000 is 99948.

It is a self number, because there is not a number n which added to its sum of digits gives 84999000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84999001) 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 31 ways as a sum of consecutive naturals, for example, 86512 + ... + 87488.

Almost surely, 2^84999000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84999000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137311200).

84999000 is an abundant number, since it is smaller than the sum of its proper divisors (189623400).

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

84999000 is a wasteful number, since it uses less digits than its factorization.

84999000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030 (or 1016 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 84999000 is about 9219.4902245189. The cubic root of 84999000 is about 439.6812429621.

The spelling of 84999000 in words is "eighty-four million, nine hundred ninety-nine thousand".