44388772489 has 2 divisors, whose sum is σ = 44388772490. Its totient is φ = 44388772488.

The previous prime is 44388772459. The next prime is 44388772501. The reversal of 44388772489 is 98427788344.

44388772489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28784515600 + 15604256889 = 169660^2 + 124917^2 .

It is a cyclic number.

It is not a de Polignac number, because 44388772489 - 2⁷ = 44388772361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 44388772489.

It is not a weakly prime, because it can be changed into another prime (44388772459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22194386244 + 22194386245.

It is an arithmetic number, because the mean of its divisors is an integer number (22194386245).

Almost surely, 2^44388772489 is an apocalyptic number.

It is an amenable number.

44388772489 is a deficient number, since it is larger than the sum of its proper divisors (1).

44388772489 is an equidigital number, since it uses as much as digits as its factorization.

44388772489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86704128, while the sum is 64.

The spelling of 44388772489 in words is "forty-four billion, three hundred eighty-eight million, seven hundred seventy-two thousand, four hundred eighty-nine".