84518699 has 4 divisors (see below), whose sum is σ = 84592536. Its totient is φ = 84444864.

The previous prime is 84518677. The next prime is 84518717. The reversal of 84518699 is 99681548.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84518699 - 2²⁴ = 67741483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84518639) 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 3 ways as a sum of consecutive naturals, for example, 35174 + ... + 37499.

It is an arithmetic number, because the mean of its divisors is an integer number (21148134).

Almost surely, 2^84518699 is an apocalyptic number.

84518699 is a deficient number, since it is larger than the sum of its proper divisors (73837).

84518699 is a wasteful number, since it uses less digits than its factorization.

84518699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73836.

The product of its digits is 622080, while the sum is 50.

The square root of 84518699 is about 9193.4051906788. The cubic root of 84518699 is about 438.8515141335.

The spelling of 84518699 in words is "eighty-four million, five hundred eighteen thousand, six hundred ninety-nine".