44189779869 has 12 divisors (see below), whose sum is σ = 65386504092. Its totient is φ = 28741320000.

The previous prime is 44189779861. The next prime is 44189779883. The reversal of 44189779869 is 96897798144.

44189779869 is a `hidden beast` number, since 441 + 8 + 97 + 7 + 98 + 6 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17698311225 + 26491468644 = 133035^2 + 162762^2 .

It is not a de Polignac number, because 44189779869 - 2³ = 44189779861 is a prime.

It is a super-2 number, since 2×44189779869² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 44189779797 and 44189779806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44189779861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59877382 + ... + 59878119.

It is an arithmetic number, because the mean of its divisors is an integer number (5448875341).

Almost surely, 2^44189779869 is an apocalyptic number.

It is an amenable number.

44189779869 is a deficient number, since it is larger than the sum of its proper divisors (21196724223).

44189779869 is a wasteful number, since it uses less digits than its factorization.

44189779869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119755548 (or 119755545 counting only the distinct ones).

The product of its digits is 219469824, while the sum is 72.

The spelling of 44189779869 in words is "forty-four billion, one hundred eighty-nine million, seven hundred seventy-nine thousand, eight hundred sixty-nine".