44399809 has 2 divisors, whose sum is σ = 44399810. Its totient is φ = 44399808.

The previous prime is 44399807. The next prime is 44399833. The reversal of 44399809 is 90899344.

44399809 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., 31640625 + 12759184 = 5625^2 + 3572^2 .

It is a cyclic number.

It is not a de Polignac number, because 44399809 - 2¹ = 44399807 is a prime.

Together with 44399807, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (44399807) 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, 22199904 + 22199905.

It is an arithmetic number, because the mean of its divisors is an integer number (22199905).

Almost surely, 2^44399809 is an apocalyptic number.

It is an amenable number.

44399809 is a deficient number, since it is larger than the sum of its proper divisors (1).

44399809 is an equidigital number, since it uses as much as digits as its factorization.

44399809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 44399809 is about 6663.3181673998. The cubic root of 44399809 is about 354.1009027482.

The spelling of 44399809 in words is "forty-four million, three hundred ninety-nine thousand, eight hundred nine".