44289780989 has 2 divisors, whose sum is σ = 44289780990. Its totient is φ = 44289780988.

The previous prime is 44289780947. The next prime is 44289781007. The reversal of 44289780989 is 98908798244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26095817764 + 18193963225 = 161542^2 + 134885^2 .

It is a cyclic number.

It is not a de Polignac number, because 44289780989 - 2²⁰ = 44288732413 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44289780089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22144890494 + 22144890495.

It is an arithmetic number, because the mean of its divisors is an integer number (22144890495).

Almost surely, 2^44289780989 is an apocalyptic number.

It is an amenable number.

44289780989 is a deficient number, since it is larger than the sum of its proper divisors (1).

44289780989 is an equidigital number, since it uses as much as digits as its factorization.

44289780989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 83607552, while the sum is 68.

The spelling of 44289780989 in words is "forty-four billion, two hundred eighty-nine million, seven hundred eighty thousand, nine hundred eighty-nine".