84499859 has 16 divisors (see below), whose sum is σ = 92611200. Its totient is φ = 76821696.

The previous prime is 84499841. The next prime is 84499867. The reversal of 84499859 is 95899448.

It is a cyclic number.

It is not a de Polignac number, because 84499859 - 2²⁴ = 67722643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84499559) 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 15 ways as a sum of consecutive naturals, for example, 47327 + ... + 49079.

It is an arithmetic number, because the mean of its divisors is an integer number (5788200).

Almost surely, 2^84499859 is an apocalyptic number.

84499859 is a deficient number, since it is larger than the sum of its proper divisors (8111341).

84499859 is a wasteful number, since it uses less digits than its factorization.

84499859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874.

The product of its digits is 3732480, while the sum is 56.

The square root of 84499859 is about 9192.3804860330. The cubic root of 84499859 is about 438.8189036894.

It can be divided in two parts, 84499 and 859, that added together give a palindrome (85358).

The spelling of 84499859 in words is "eighty-four million, four hundred ninety-nine thousand, eight hundred fifty-nine".