84440444405 has 16 divisors (see below), whose sum is σ = 107363133504. Its totient is φ = 63534777600.

The previous prime is 84440444383. The next prime is 84440444411. The reversal of 84440444405 is 50444404448.

It is not a de Polignac number, because 84440444405 - 2²⁰ = 84439395829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218987 + ... + 465656.

It is an arithmetic number, because the mean of its divisors is an integer number (6710195844).

Almost surely, 2^84440444405 is an apocalyptic number.

84440444405 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

84440444405 is a deficient number, since it is larger than the sum of its proper divisors (22922689099).

84440444405 is a wasteful number, since it uses less digits than its factorization.

84440444405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686116.

The product of its (nonzero) digits is 655360, while the sum is 41.

The spelling of 84440444405 in words is "eighty-four billion, four hundred forty million, four hundred forty-four thousand, four hundred five".