44013889 has 2 divisors, whose sum is σ = 44013890. Its totient is φ = 44013888.

The previous prime is 44013887. The next prime is 44013911. The reversal of 44013889 is 98831044.

44013889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39790864 + 4223025 = 6308^2 + 2055^2 .

It is a cyclic number.

It is not a de Polignac number, because 44013889 - 2¹ = 44013887 is a prime.

Together with 44013887, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (44013887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22006944 + 22006945.

It is an arithmetic number, because the mean of its divisors is an integer number (22006945).

Almost surely, 2^44013889 is an apocalyptic number.

It is an amenable number.

44013889 is a deficient number, since it is larger than the sum of its proper divisors (1).

44013889 is an equidigital number, since it uses as much as digits as its factorization.

44013889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 44013889 is about 6634.2964208724. The cubic root of 44013889 is about 353.0719758430.

The spelling of 44013889 in words is "forty-four million, thirteen thousand, eight hundred eighty-nine".