84000844799 has 4 divisors (see below), whose sum is σ = 85788096864. Its totient is φ = 82213592736.

The previous prime is 84000844787. The next prime is 84000844819. The reversal of 84000844799 is 99744800048.

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 84000844799 - 2⁴ = 84000844783 is a prime.

It is a super-2 number, since 2×84000844799² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84000844799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84000849799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 893625962 + ... + 893626055.

It is an arithmetic number, because the mean of its divisors is an integer number (21447024216).

Almost surely, 2^84000844799 is an apocalyptic number.

84000844799 is a deficient number, since it is larger than the sum of its proper divisors (1787252065).

84000844799 is a wasteful number, since it uses less digits than its factorization.

84000844799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1787252064.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 84000844799 in words is "eighty-four billion, eight hundred forty-four thousand, seven hundred ninety-nine".