84044888009 has 4 divisors (see below), whose sum is σ = 84471512004. Its totient is φ = 83618264016.

The previous prime is 84044888003. The next prime is 84044888017. The reversal of 84044888009 is 90088844048.

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

It can be written as a sum of positive squares in 2 ways, for example, as 69313725625 + 14731162384 = 263275^2 + 121372^2 .

It is a cyclic number.

It is not a de Polignac number, because 84044888009 - 2¹⁶ = 84044822473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84044888003) 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, 213311702 + ... + 213312095.

It is an arithmetic number, because the mean of its divisors is an integer number (21117878001).

Almost surely, 2^84044888009 is an apocalyptic number.

It is an amenable number.

84044888009 is a deficient number, since it is larger than the sum of its proper divisors (426623995).

84044888009 is a wasteful number, since it uses less digits than its factorization.

84044888009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426623994.

The product of its (nonzero) digits is 2359296, while the sum is 53.

The spelling of 84044888009 in words is "eighty-four billion, forty-four million, eight hundred eighty-eight thousand, nine".